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Increase your English vocabulary without memorizing a lot of words: Greek and Latin basic word parts in English language

You can increase your vocabulary without memorizing a lot of words.
Words are composed of word parts: prefixes, suffixes and roots.
A knowledge of these word parts and their meanings can help you to unlock the meaning of unfamiliar words.
Most modern English words are derived from Anglo-Saxon (Old English), Latin and Greek.
Build your vocabulary by mastering basic word parts.
Learning 30 key word parts can help you unlock the meaning of over 10,000 words.
Learning 50 key word parts can help you unlock the meaning of over 100,000 words.

Greek and Latin roots finder
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Root Meaning in English Origin language Etymology (root origin) English examples
ab-, a-, abs-, au- away from Latin ab abnormal, abrasion, absent, abstain, abstract, abstraction, aversion, avulsion
abac- slab Greek ἄβαξ, ἄβακος (ábaks, ábakos), ἀβακίσκος (abakískos) abaciscus, abacus, abax
ac-, acm-, acr- point Greek ἀκή (akḗ), ἀκίς, ἀκίδος (akís, akídos), ἀκόνη (akónē), ἄκρος (ákros), ἄκρον (ákron), ἄκρα acidanthera, acme, acmeism, acmesthesia, acmic, acne, paragon
ac- cure Greek ἀκεῖσθαι (akeîsthai), ἀκή (akḗ), ἄκος, ἄκεος (ákos, ákeos) autacoid, panacea
academ- Akademos Greek Ἀκάδημος (Akádēmos) academe, academia, academic, academy
acanth- thorn Greek ἀκή, ἄκανθα (ákantha) Acanthaster, acanthion, acanthite, Acanthocephala, acanthocephaliasis, acanthocyte, Acanthomintha, Acanthosaura, Acanthus, Metriacanthosaurus, neuroacanthocytosis
acar- mite Greek ἀκαρί (akarí) acariasis, acarid, acariphagous, acaroid, acarology, acarophobia, acarus
accipitr- hawk Latin accipiter Accipiter, accipitrine
acer-, acri- bitter, sharp, sour Latin ācer, ācris, acerbus, acere acerbic, acrid, acrimonious, acrimony, exacerbate
acet- sour, vinegar Latin acētum acetabulum, acetate, acetic, acetone, acetum, triacetate
acid- acidic, sour Latin acidus acidiferous, acidity, acidosis, acidulation, acidulous
acr- height, summit, tip Greek ἀκή (akḗ), ἄκρος (ákros) "high", "extreme", ἄκρον (ákron) acrobat, acrobatics, acrochordon, acromegalia, acromegaly, acromion, acronym, acrophobia, acropolis, acrostic, acroterion, acrotomophilia
actin- beam, ray Greek ἀκτίς, ἀκτῖνος (aktís, aktînos) actinic, actinism, actinium, actinocerid, actinodrome, actinoid, actinomere, actinometer, actinomorphic, actinomyces, actinophryid, actinopod, Actinopterygii, actinotherapy, actinozoa
acu-, acut- sharp, pointed Latin acutus, past participle of acuere "to sharpen", from acus "needle" acerose, acupuncture, acumen, acute, acutifoliate
ad-, a-, ac-, af-, ag-, al-, am-, an-, ap-, ar-, as-, at- movement to or toward; in addition to Latin ad "to", "toward" accept, accurate, adapt, affect, agglomerate, aggregate, aggression, allege, allude, ammunition, annectent, approximate, arreption, arride, arrogant, ascend, assault, assimilate, attend, attract
aden- gland Greek ἀδήν, ἀδένος (adḗn, adénos) adenocarcinoma, adenoid, adenoidectomy, adenology, adenoma, adenomyosis, adenosis
adip- fat Latin adeps, adipis "fat" adipocellular, adipose
aer- lift, raise Greek ἀείρειν (aeírein), ἀορτή (aortḗ), αἰρόμενον, ἀϝείρω aorta, aortic, endaortitis, meteor, meteorology
aer- air, atmosphere Greek ἀήρ, ἀέρος (aḗr, aéros) "air" aerobic, aerodynamic, aeronautics, aeroplane, aerorrhachia, aerosol, aerotitis
aesth- feeling, sensation Greek αἰσθητός (aisthētós), αἰσθητικός (aisthētikós) "of sense perception" from αἰσθάνεσθαι (aisthánesthai) "to perceive" aesthesia, aesthesis, aesthete, aesthetics, anaesthetic, synesthesia
aether-, ether- upper pure, bright air Greek αἴθειν (aíthein), αἰθήρ (aithḗr) ether, ethereal, etheric, hypaethros
aev-, ev- age Latin aevum age, coeval, eon, eternal, longevity, medieval, primeval
ag-, -ig-, act- do, go, move Latin agere, actus act, action, actor, agenda, agent, agile, agitate, ambiguous, castigate, cogent, cogitate, cogitation, excogitate, mitigate, navigate
ag- lead Greek ἄγειν (ágein) (cognate with Latin agere), ἀγωγός (agōgós) agony, antagonist, antagonize, demagogue, pedagogue, pedagogy, strategy, synagogue
agap- love Greek ἀγάπη (agápē) agape
agr- field Greek ἀγρός, ἀγροῦ (agrós, agroû) agronomist, agronomy
agri-, -egri- field Latin ager, agris "field, country" agriculture, peregrine
ailur- cat Greek αἴλουρος (aílouros) Ailuroedus, ailuromancy, ailurophile, ailurophilia, ailurophobia
alac- cheerful Latin alacer alacrity, allegro
alb- dull white Latin albus albedo, albino, albumen
alcyon- kingfisher Greek ἀλκυών, ἀλκυόνος (alkuṓn, alkuónos) Halcyon, halcyon
ale- wheat flour Greek ἀλέω, ἄλευρον (áleuron), ἀλείατα aleuromancy, aleurone, aleuronic
alg- pain Greek ἄλγος (álgos), ἀλγεινός, ἀλγεῖν (algeîn), ἄλγησις (álgēsis) analgesic, arthralgia, neuralgia, nostalgia
ali-, alter- other Latin alius alias, alibi, alien, alter, alternate, altruism
all- other Greek ἄλλος (állos) allegory, allogenic, allograph, allophone, parallactic, parallax
allel- one another Greek ἀλλήλων (allḗlōn) allele, allelomorph, allelotaxis, parallel, parallelism, parallelogon, parallelogram
alph- A, a Greek Α, α, ἄλφα (álpha) alphabet, alphabetic, analphabetic, panalphabetic, polyalphabetic
alphit- barley Greek ἀλφός (alphós), ἄλφιτον, ἀλφίτου (álphiton, alphítou) alphitomancy
alt- high, deep Latin altus, altitudo altimeter, altitude
am-, amat- love, liking Latin amāre, amatus, amor amateur, amatory, amenity, amorous, enamoured
am-, amic-, -imic- friend Latin amicus amiable, amicable, amity, enemy, enmity, inimical
amath- sand Greek

ambi-, am-, amb-, ambo-, an- both, on both sides Latin ambi ambidexterity, ambient, ambiguous, ambit, ambition, ambivalent, amboceptor, amputation, ancipital, andante
ambly- dull Greek ἀμβλύς (amblús) amblygeustia, amblygonite, amblyopia, Amblypoda
ambul- walk Latin ambulare ambulance, ambulatory, preamble
amm- sand Greek ἄμμος (ámmos), ἄμαθος (ámathos) amathophobia, Ammophila
amn- lamb Greek ἀμνός (amnós), ἀμνεῖος, ἀμνειός, ἀμνίον (amníon) amniocentesis, amnion, amnioscope, amniote, amniotic, anamniote
amph-, amphi- both, on both sides of, both kinds Greek ἀμφί (amphí) "on both sides" amphibian, amphibious, amphibole, amphibolic, amphimacer, Amphipoda, amphistyly, amphitheatre, amphoterism
ampl- ample, abundant, bountiful, large Latin amplus ample, amplify, amplitude
amygdal- almond Greek ἀμυγδάλη (amugdálē), ἀμύγδαλον (amúgdalon) almond, amygdala, amygdale, amygdalin, amygdaloid, amygdule
an-, a-, am-, ar- not, without Greek Greek ἀν-/ἀ- "not" ambrosia, anaerobic, anhydrous, arrhythmia, atheism, atypical
ana-, am-, an- again, against, back, up Greek ἀνά (aná) anagram, anabaptist, anaphylaxis, anarrhexis, anion, anode
andr- male, masculine Greek ἀνήρ, ἀνδρός (anḗr, andrós), ἀνδρότης Alexander, androcentric, androcentrism, androgen, androgenous, androgyne, androgynous, androgyny, android, andrology, androphobia, androspore, diandry, misandry, monandry, philander, polyandrous, polyandry, protandry, pseudandry, synandrous
anem- wind Greek ἄνεμος (ánemos) anemograph, anemometer, anemometric, anemone, anemophilous, anemophily, anemophobia, anemoscope, anemotropism
anim- breath, life, spirit Latin anima "breath" animal, animation
ann-, -enn- year, yearly Latin annus "year" anniversary, annual, centennial, millennium, perennial
ant-, anti- against, opposed to, preventive Greek ἀντί (antí) "against" antagonist, antagonize, antibiotic, antidote, antipodes, antirrhinum
ante-, anti- before, in front of, prior to; old Latin ante "before", "against"; see also antiquus "old" antebellum, antediluvian, anticipate, antiquarian, antiquate, antique, antiquity
anth- flower Greek ἀνθεῖν (antheîn), ἄνθος (ánthos), ἄνθησις (ánthēsis), ἄνθημα (ánthēma), ἀνθηρός (anthērós) anther, anthesis, Anthocoridae, anthodite, anthology, anthophobia, anthophore, Anthozoa, chrysanthemum, dianthus, enanthem, enanthema, exanthem, exanthematic, hydranth, hypanthium, perianth, zoanthid
anthrac- coal Greek ἄνθραξ, ἄνθρακος (ánthraks, ánthrakos) anthracite, anthracnose, anthracycline, anthrax
anthrop- human Greek ἄνθρωπος (ánthrōpos) "man" anthropology, anthroposophy, anthropomorphic, misanthrope, philanthropy
ap-, apo- away from, separate, at the farthest point Greek ἀπό (apó) "from, away, un-, quite", sometimes "changed, switched" aphelion, apocrine, apocryphal, apogee, aporrhinosis, apostasy, apostate
aper- open Latin aperire aperient, apéritif, aperitive, aperture, overt, overture, pert
aphrod- Aphrodite Greek Ἀφροδίτη (Aphrodítē), Ἀφροδίσιος (Aphrodísios), ἀφροδισιακόν (aphrodisiakón) aphrodisiac, pseudohermaphroditism
api- bee Latin apis apian, apiary, apicula, apium; Petrus Apianus
aqu- water Latin aqua acquacotta, akvavit, aqua vitae, aquaculture, aquamarine, aquarelle, aquarium, Aquarius, aquatic, aquatile, aqueduct, aqueous, aquifer, aquiferous, aquiform, gouache, semiaquatic
ara- plow, till Latin ărāre arability, arable, aration, aratory, exarate, exaration, inarable, nonarable
arachn- spider Greek ἀράχνης, ἀράχνη (arákhnē) Arachne, arachnid, arachnodactyly, arachnoid, arachnology, arachnophobia
arbit- judge Latin arbiter (from ad "to" + baetere "to come, go") arbiter, arbitrage, arbitrary, arbitration
arcan- box Latin arcanus arcane, arcanum
arch-, arche-, archi- ruler Greek ἄρχειν (árkhein), ἄρχων (árkhōn), ἀρχή (arkhḗ) "rule" (in compounds: ἀρχε-, ἀρχι-) anarchy, archangel, archetype, architect, archon, autarchism, autarchy, exarch, monarchy, oligarchy, patriarchy, polyarchy, synarchy, triarchy
archae-, arche- ancient Greek ἀρχαῖος (arkhaîos) "ancient" from ἀρχή (arkhḗ) "rule" archaeology, archaic, archaism
arct- Relating to the North Pole or the region near it; relating to cold Greek ἄρκτος (árktos) "bear", ἀρκτικός (arktikós) Antarctic, arctic, Arctic Ocean, palearctic
ard- heat, glow, passion Latin ardere "to burn", arsus ardent, ardor, arson
ardu- difficult Latin arduus "high, steep" arduous
aret- virtue Greek ἀρετή, ἀρετῆς (aretḗ, aretês) aretaic, arete
argent- silver Latin argentum argent, Argentina
arid- be dry Latin ārēre "be dry or parched" arid
arist- excellence Greek ἄριστος (áristos) aristocracy, aristocrat
arithm- count, number Greek ἀριθμός (arithmós), ἀριθμέω, ἀριθμητικός (arithmētikós) antilogarithm, arithmetic, arithmomania, logarithm, logarithmic
arsen- male Greek ἄρσην, ἄρσενος (ársēn, ársenos), ἀρσενικός (arsenikós) arsenopyrite
art- art, skill Latin ars, artis artifact, artifice, artificial, artificiality, artisan
arthr- joint Greek ἄρθρον (árthron) anarthria, arthritic, arthritis, arthrogryposis, arthropathy, arthroplasty, arthropod, arthroscope, arthroscopic, arthroscopy, arthrosis, dysarthria, osteoarthritis, spondyloarthropathy
arti- even Greek ἄρτιος (ártios), ἀρτιότης "evenness", ἀρτιάκις artiodactyl, artiodactylous
asc- bag Greek ἀσκός (askós), ἀσκίδιον (askídion) ascidium, ascites, ascitic, ascocarp, ascoma, ascomycete, Ascomycota, ascospore, ascus
asin- ass Latin asinus asinine, ass, easel
asper- rough Latin asper "rough" asperity, exasperate
aspr- white Greek ἄσπρος (áspros) diaper
aster-, astr- star, star-shaped Greek ἀστήρ, ἀστέρος (astḗr, astéros), ἄστρον (ástron) "star" aster, asterisk, asteroid, astrology, astronomy, astronaut, diasterism geaster, monaster
asthen- weak Greek ἀσθενής (asthenḗs) asthenopia, asthenosphere, asthenozoospermia
ather- gruel Greek ἀθάρη (athárē) atherogenic, atheroma, atherosclerosis
athl- prize Greek ἆθλος (âthlos) "contest, feat", ἄεθλος athlete, athletic, decathlon, pentathlon, triathlon
-athroid- gathered or lumped together Greek ἀθροίζειν (athroízein) "to gather together" epiathroid, hypoathroid
audac- daring Latin audax "brave, bold, daring", from audere "to dare" audacious, audacity
aud- hearing, listening, sound Latin audire "to hear" audible, audio, audiology, audit, audition, auditorium, auditory
aug-, auct- grow, increase Latin augēre, auctus "to increase" auction, augend, augment, augmentation, augur, augury, august, author, auxiliary, inauguration
aul- flute, tube Greek ἄημι (ἄϝημι), αὐλός (aulós), αὐλέω, αὔλησις, αὐλητής (aulētḗs) aulete, aulos, hydraulic, hydraulus
aur- relating to gold, or gold-colored Latin aurum "gold" aureate, aureole
auri-, aus- relating to the ear Latin auris "ear" aural, auricle, aurinasal, auscultate, auscultation
aut-, auto- self; directed from within Greek αὐτός (autós) "self", "same" autarchism, autarchy, autarky, authentic, autism, autistic, autocracy, autograph, automatic, automaton, autonomy
aux- increase Greek αὔξειν (aúksein), αὐξάνειν auxánein, αὔξησις (aúksēsis), αὐξητικός (auksētikós) auxanogram, auxanography, auxanology, auxanometer, auxesis, auxetic, auxin, auxochrome, auxology, auxotroph, auxotrophy
av- desire Latin avere "crave, long for" avarice, avaricious, avarous, ave, avid, avidity
avi-, au- bird Latin avis auspice, auspicious, avian, aviary, aviation, aviator
axi- merit, worth Greek ἄξιος (áksios) "worth", ἀξίωμα (aksíōma) axiogenesis, axiology, axiom, axiomatic
axi- axis Latin axis axis, axisymmetry
axon- axis, axle Greek ἄξων, ἄξονος (áksōn, áksonos) axon, axonography, axonometric, axonotmesis
Greek βαίνειν (baínein), βατός (batós), βάσις (básis), βῆμα, βήματος (bêma, bḗmatos), βάτης (bátēs), βάθρον (báthron), βατεῖν acrobat, acrobatic, adiabatic, aerobatic, anabasis, anabatic, antiparabema, base, basic, basidiocarp, basidioma, basidiomycete, basidiospore, basidium, basion, basionym, basis, basophilic, bema, catabasis, catabatic, diabase, diabatic, diabetes, diabetic, dibasic, hyperbaton, hypobasis, katabasis, katabatic, monobasic, polybasic, stereobate, stylobate, tribasic
bac- rod-shaped Latin baculum baculiform, baculum, bacteria
bal-, bel-, bol- throw Greek βάλλειν (bállein), βολή (bolḗ), βλῆμα (blêma) ametabolic, ametabolism, amphibole, amphibolic, amphibolite, amphibolous, amphiboly, anabolic, anabolism, astrobleme, ball, ballism, ballista, ballistic, ballistospore, belomancy, belonephobia, bolide, bolometer, catabolic, catabolism, devil, diabolic, emblem, emblematic, embolic, embolism, embolismic, embolize, embolon, embolus, emboly, hemiballismus, holometabolism, hyperbola, hyperbole, hyperbolic, hyperboloid, metabolic, metabolism, metabolite, metabolize, palaver, parable, parabola, parabolic, paraboloid, parle, parley, parol, parole, problem, problematic, symbol, symbolic, symbolism, symbolist, symbolize, symbology, taurobolium, thromboembolism
bapt- dip Greek βάπτειν (báptein), βάμμα (bámma) abaptiston, Anabaptist, baptism, baptize
bar- weight, pressure Greek βαρύς (barús), βάρος (báros) abarognosis, antibaryon, baresthesia, bariatric, baritone, barognosis, barogram, barograph, barometer, barometric, barophobia, barostat, barycentre, barycentric, baryogenesis, baryon, barysphere, baryton, barytone, hyperbaric, hypobaric, isobar, isobaric
bas- step Greek βάσις
bath- deep, depth Greek βαθύς (bathús), βάθος (báthos) batholith, bathophobia, bathos, bathymetry, bathyscaphe, bathysphere, isobathic
be-, beat- bless Latin beare, beatus beatification
bell-, belli- war Latin bellum, belli antebellum, bellicose, belligerent, rebellion
ben- good, well Latin bene (adverb) beneficence, benefit, benevolent, benign, benignant, benignity
bi-, bin-, bis- two Latin bis, "twice"; bini, "in twos" bicycle, biennial, bifocal, bisexual, bigamy, binary, binoculars, biscotti
bib- drink Latin bibere, bibitus bib, beer, beverage, imbibe
bibl- book Greek βίβλος (bíblos), βιβλίον (biblíon) "book" bible, biblioclasm, biblioclast, bibliogony, bibliographic, bibliography, biblioklept, bibliomancy, bibliomania, bibliophile, bibliophilia, bibliophobe, bibliophobia, bibliotaph
bio-, bi- life Greek βιοῦν (bioûn), βίος (bíos) "life", βιωτός (biōtós), βιωτικός (biōtikós), βίωσις (bíōsis) abiogenesis, abiotic, aerobiology, anhydrobiosis, anoxybiosis, antibiotic, astrobiology, autobiography, biocentrism, biochron, biocoenosis, biogenesis, biographic, biography, biologism, biologist, biology, biome, biometric, biomorph, biomorphism, biophilia, biophysicist, biophysics, biopoiesis, biopolymer, biopsy, biorhythm, biosemiotic, biosphere, biostasis, biosynthesis, biota, biotic, biotin, biotope, biotype, biozone, chemobiosis, cryobiosis, cryptobiosis, endosymbiont, endosymbiosis, enterobiasis, macrobiotic, microbiology, osmobiosis, probiotic, symbiogenesis, symbiology, symbiont, symbiosis, symbiotic
blast- germ, embryo, bud, cell with nucleus Greek βλαστάνειν (blastánein), "I put forth shoots", βλαστός (blastós), βλάστημα (blástēma) blastema, blastochyle, blastocoel, blastocoele, blastocyst, blastoderm, blastoma, blastula, cytotrophoblast, diploblasty, ectoblast, endoblast, entoblast, fibroblast, osteoblast, sideroblast
blenn- slime Greek βλέννος (blénnos) blennadenitis, blennophobia, blennosperma, blennorrhagia
bol- throw Greek

bol- clod, lump Greek βῶλος (bôlos) bole, bolus, embolism
bomb- boom Greek βομβεῖν, βόμβος, βόμβησις bomb, bound
bon- good Latin bonus bonify, bonitary
bore- north Latin from Greek borealis "northern" from Βορέας (Boréas) "the north wind" borealis
botan- plant Greek βοτάνη, βότανον (botánē, bótanon), βοτανικός botanic, botanist, botanology, botany
bov-, bu- cow, ox Latin bos (genitive bovis) "ox, cow" beef, boor, bovine, bucinator muscle
brachi-, brachio- arm Latin bracchium brachiferous, brachial artery, brachiocubital
brachi-, brachio-, brachion-, brachioni- arm Greek βραχίων (brakhíōn) brachialgia, brachionerysipelas, brachionigraph, brachiorrhachidian, brachiosaurus
brachy- short Greek βραχύς (brakhús) amphibrach, brachistochrone, brachycephaly, brachydactyly, brachyury, dibrach, tribrach
brady-, bradys- slow Greek βραδύς (bradús), βράδος (brádos) bradycardia, bradysuria, bradytelic
branchi- gill Greek βράγχιον (bránkhion) branchiopneustic, branchiopod, nudibranch
brev- brief, short (time) Latin brevis, breviare abbreviate, brevextensor, brevicaudate, brevity, brief
bromat-, bromato-, broma-, bromo- food Greek βρῶμα (brôma) bromatium, bromateccrisis, bromatherapy, bromatology, bromography
brom- oats Greek βρόμος, βρόμη (brómos, brómē) "oats" brome, Bromus, Bromus ramosus
brom- stench Greek βρῶμος (brômos) "stench, clangor" bromate, bromide, bromine, bromoderma, organobromine
bronch- windpipe Greek βρόγχος (brónkhos), βρόγχια (brónkhia) bronchia, bronchiole, bronchion, bronchitis, bronchomalacia, bronchopneumonia, bronchus, tracheobronchomalacia
bront- thunder Greek βροντή (brontḗ) brontology, brontophobia, Brontosaurus
brot- mortal Greek βροτός (brotós) ambrosia, ambrotype
bucc- cheek, mouth, cavity Latin bucca buccal, buccilingual, buccolingual
bulb- bulbous Latin bulbus bulbiform, bulbiparous, bulboartrial, bulborrhexis, bulbous, bulbule
bull- bubble, flask Latin bullire, bulla bullectomy, bulliferous, ebullient, ebullism
burs- pouch, purse Latin bursa bursa, bursalogy, bursar, bursary, bursectomy, bursiform, disburse
butyr- butter Greek βούτυρον (boúturon) butyric
byss- bottom Greek βυσσός, βυσσοῦ (bussós, bussoû) abyss, abyssopelagic, hypabyssal
byss- flax Greek βύσσος (bússos) byssus
cac-, kak- bad Greek κακός (kakós), κάκιστος (kákistos) cachexia, cacodemon, cacography, cacophonous, cacophony, cacorrhacitis, kakistocracy
cad-, -cid-, cas- fall Latin cadere, casus accident, cadaver, cadence, cascade, case, recidivism
caed, -cid-, caes-, -cis- cut, kill Latin caedere, caesus caesura, excise, germicide, homicide, incisor
cal-, call- beautiful Greek καλός (kalós) "beautiful"; κάλλος (kállos) "beauty", κάλλιστος (kállistos) calisthenics, calligraphy, Callista, Callisto, calophyllous, kaleidoscope
cal- call Latin calare calendar, claim, class, conciliate, conciliatory, council, intercalate, nomenclature
cal- heat Latin calere, calor "heat" caldarium, caldera, calefacient, calefaction, calefactive, calefactory, calenture, calescent, calid, calor, calore, caloric, calorie, calorifacient, calorific, calorigenic, calorimeter, caudle, cauldron, chafe, chafery, chalder, chaldron, chaud-froid, chauffer, chauffeur, chauffeuse, decalescence, decalescent, nonchalance, nonchalant, recalescence, scald
calc- stone Latin and Greek from Latin calx (genitive calcis) "lime", from Greek χάλιξ (kháliks) "pebble", "limestone" calcite, calcitrant, calcium, calculate, calculus, chalicothere, chalk, recalcitrant
calv-, calum- trick, lie, deceive Latin calumnia "slander, trickery", from calvi "to trick, deceive" calumnious, calumny, cavil, challenge
calyp- cover Greek καλύπτειν (kalúptein), καλυπτός (kaluptós), κάλυξ, κάλυκος (káluks, kálukos) apocalypse, apocalyptic, apocalypticism, calyce, calyptra, Calyptrogyne, calyx, epicalyx, eucalypt, eucalyptus
camer- vault Latin camera antechamber, bicameral, camaraderie, camber, camera, chamber, chamberlain, comrade, concamerate, concameration, multicamera, tricameral, unicameral
camisi- shirt Latin camisia camisade, camisado, Camisard, camisole, chemise
camp- field Latin campus "field", "level ground" camp, campaign, campesino, campestral, campicolous, campimetry, campo, campsite, campus, champertous, champerty, champignon, champion, decamp, decampment, encamp, encampment
can- dog Latin canis canaille, canary, canicular, canicule, canid, canine, Canis, Canis Major, postcanine
can- reed, rod Greek κάννα (kánna), κανών (kanṓn) cane, canister, canon, canonic
can-, -cin-, cant-, -cent- sing Latin canere, cantus accent, accentual, accentuate, accentuation, canción, canorous, cant, cantabile, cantata, cantation, cantatory, cantatrice, canticle, canticum, cantiga, cantilena, cantillate, cantillation, cantion, canto, cantor, cantus, canzona, canzone, Carmen, chanson, chansonnier, chant, chanteur, chanteuse, chanticleer, charm, concent, descant, discant, discantus, disenchant, disenchantment, disencharm, disincentive, enchant, enchantment, enchantress, incantation, incantational, incentive, plainchant, precentor, recant, recantation, succentor, vaticinate, vaticination, vaticinator
cand-, cend- glowing, iridescent Latin candere "to be white or glisten" candela, candid, candle, candor, incandescent, incendiary, incense
cap-, -cip-, capt-, -cept- hold, take Latin capere, captus "take or hold" (vowel changes from a to i in compounds) capable, capacious, captive, caption, captivate, capture, conception, except, forceps, incipient, intercept, recipient
capit-, -cipit- head Latin caput, capitis achievable, achieve, achievement, ancipital, ancipitous, biceps, bicipital, cabotage, cad, caddie, cadet, cape, capital, capitular, capitulate, capitulation, captain, chapter, chaptrel, chattel, chef, chief, chieftain, co-captain, co-captaincy, decapitate, decapitation, occipital, occiput, precipitation, precipitous, quadriceps, recap, recapitulate, sincipital, sinciput, sous-chef, subcaptain, triceps, tricipital, unicipital, vice-captain, vice-captaincy
capn- smoke Greek καπνός (kapnós), καπνόομαι capnogram, capnograph, capnography, capnolagnia, capnomancy, capnometer, capnometry, capnomor, capnophile, hypercapnia, hypocapnia
capr- goat Latin caper (genitive capri) "goat", also capreolus "wild goat" cab, caper, caprice, Capricorn, caprine
caps- box, case Latin capsa capsule
carbon- coal Latin carbo, carbonis bicarbonate, carbon, carbonara, carbonate, carbonation, Carboniferous, carbuncle, radiocarbon
carcer- jail Latin carcer, carcerare, cancelli chancel, chancellery, chancellor, chancery, incarcerate, incarceration, subchancel
carcin- cancer (disease) Latin from Greek Latin from Greek καρκίνος (karkínos) "crab" carcinogenic, carcinoma
cardi- heart Greek καρδιά (kardiá) cardiac, cardialgia, cardiograph, cardioid, cardiologist, cardiology, cardiomegaly, cardiomyopathy, cardioplegia, cardioplegic, cardiospasm, electrocardiogram, electrocardiography, endocardium, epicardium, hemicardia, myocardium, neurocardiology, pericardium
cardin- hinge Latin cardo, cardinis cardinal, cardinality, kern
carn- flesh Latin caro, carnis carnage, carnal, carnality, carnary, carnate, carnation, carneous, carnival, carnivore, carnose, carnosity, carrion, caruncle, carunculate, charcuterie, charnel, discarnate, incarnadine, incarnate, incarnation, reincarnate, reincarnation
carp- fruit Greek καρπός (karpós) acarpous, acrocarpous, amphicarpous, angiocarpous, anisocarpic, Carpo, carpogonium, carpology, carpophagous, carpophore, carpospore, cystocarp, dipterocarp, endocarp, epicarp, exocarp, Karpos, mericarp, mesocarp, monocarpic, pericarp, polycarpic, procarp, pseudocarp
carp- wrist Greek καρπός (karpós) carpal, carpal tunnel syndrome, carpus, metacarpus
cast- pure, cut Latin castrare and castus, from kes- (to cut) caste, castigate, castrate, chaste, chastity, incest
cata-, cat- down, against, back Greek κατά (katá) "down, against, back" catabolic, catacomb, catalyst, catarrhine, catastrophe, catatonia, cathode, cation
caten- chain Latin catena catenary, concatenation
cathar- pure Greek καθαρός (katharós) catharsis, cathartic
caud- tail Latin cauda caudal, coda
caus-, -cus- cause or motive Latin causa accuse, because, causal, causative, cause, excuse
caust-, caut- burn Greek καίειν (kaíein), καυστός, καυτός (kaustós, kautós), καυστικός (kaustikós), καῦσις (kaûsis), καῦμα (kaûma) calm, catacaustic, causalgia, causalgic, caustic, cauter, cauterize, cautery, diacaustic, encaustic, holocaust, hypocaust
cav- hollow Latin cavus cave, cavity, excavation
ced-, cess- move, yield, go, surrender Latin cedere, cessus accede, cede, concede, precede, procedure, proceed, procession, recede, secede, succeed, success
cel- hide Latin celare "to hide" ceiling, clandestine, conceal, occult
celer- quick Latin celer, celerare acceleration, celerity
cen-, caen- new Greek καινός (kainós) caenogastropod, caenogenesis, Cenozoic
cen- empty Greek κενός (kenós) cenotaph, kenosis
cen-, coen- common Greek κοινός (koinós) cenobite, coenesthesia, coenocyte, epicene, epicœne, koinonos, koinophilia
cens- to assess Latin censere censure, census
cent- hundred Latin centum cent, centennial, centurion, percent
centen- hundred each Latin centeni centenarian, centenary
centesim- hundredth Latin centesimus centesimal, centesimation
centr- center Greek κέντρον (kéntron) "needle", "spur", κεντρικός, κεντρισμός acentric, acrocentric, barycenter, centesis, centre, centric, centrism, centrist, centroid, centromere, centromeric, centrosphere, centrosymmetric, centrosymmetry, centrum, eccentric, enterocentesis, epicentre, holocentric, metacentric, monocentric, neocentromere, orthocenter, orthocentric, paracentesis, telocentric
centri- center Latin centrum central, center, concentrate, concentric, centrifugal, centripetal
cephal- head Greek κεφαλή (kephalḗ) acephalic, acephaly, anencephaly, autocephaly, brachiocephalic, brachycephalic, cephalic, cephalomancy, cephalometry, cephalon, cephalopagus, cephalopod, diencephalon, dolichocephalic, encephalitis, encephalogram, encephalopathy, holoprosencephaly, hydrocephalus, macrocephaly, mesaticephalic, mesencephalic, mesocephalic, metencephalon, microcephaly, myelencephalon, neencephalon, paleencephalon, prosencephalon, rhombencephalon, rhombencephalosynapsis, syncephalus, telencephalon
ceram- clay Greek κέραμος (kéramos) ceramic
cerat- horn Greek κέρας (kéras), κέρατος (kératos) keratin, triceratops
cern-, cer- sift Latin cernere "to sift, separate" ascertain, certain, concern, concert, decree, discern, excrement, secern, secret
cervic- relating to the neck, relating to the cervix Latin cervix, cervicis "neck" cervix, cervical
ceter- other Latin ceterus et cetera
chaet- hair, bristle, or seta Greek χαίτη (khaítē) "long hair" chaetophobia, chaetophorous, Chaetomium, Chaetomorpha, Oligochaeta, Polychaeta
chir- of the hand or hands Greek χείρ (kheír) "hand" chiral, chiropractic, chiroptera
chelon- relating to a turtle Greek χελώνη (khelṓnē) "tortoise" chelonia, Archelon
chlor- green Greek χλωρός (khlōrós) chlorine, chlorophyll, chloroplast
chondr- cartilage Greek χόνδρος (khóndros) hypochondriasis
chore- relating to dance Greek χορεία (khoreía) "dancing in unison" from χορός (khorós) "chorus" choreography, chorus
chord- cord Latin and Greek chorda "rope" from χορδή (khordḗ) chordata, cord
chrom- color Greek χρῶμα (khrôma) chromatic, chrome, chromium, chromosome, monochrome, polychrome
chron- time Greek χρόνος (khrónos) anachronism, chronic, chronicle, chronology, chronometer, synchronize
chrys- gold Greek χρυσός (khrusós) chrysalis, chrysolite
cili- eyelash Latin cilium cilia, supercilious
ciner- ash Latin cinis, cineris incineration
cing-, cinct- gird Latin cingere, cinctus succinct
circ- circle, ring Latin circulus, circus circle, circular, circulate, circus
circum- around Latin circum circumcise, circumference, circumlocution, circumnavigate, circumscribe
cirr- orange Greek κιρρός (kirrhós) cirrhosis
cirr- curl, tentacle Latin cirrus cirrus
cit- call, start Latin citare, frequentative of ciere citation, cite, excite, incite, solicit, solicitous
civ- citizen Latin civis civic, civil, civilian, civility, civilization
clad- branch Greek κλάδος (kládos) clade
clam- cry out Latin clamare acclaim, claim, clamor, exclamation, proclamation, reclamation
clar- clear Latin clarus, clarare clarity, clear, declaration
clast- broken Greek κλαστός (klastós) iconoclast, osteoclast
claud-, -clud-, claus-, -clus- close, shut Latin claudere, clausus clause, claustrophobia, conclude, exclude, exclusive, include, occlusion, occult, recluse, seclude
clav- key Greek κλείς (kleís) "key" from κλείειν, (kleíein) "to close" clavichord, clavicle, conclave
cleist- closed Greek κλειστός (kleistós) cleistogamy
cleithr- bar, key Greek κλεῖϑρον (kleîϑron) cleithrum
cle- call Greek ἐκκλησίᾱ, κλῆσις, κλητός (ekklēsíā, klêsis, klētós) ecclesia, Ecclesiastes, ecclesiastic, ecclesiology, ecclesiophobia, epiclesis, paraclete
clement- mild Latin clemens, clementis clemency, inclement
clin- bed Greek κλίνη (klínē) clinic
clin- lean, recline Latin -clinare decline, declination, incline, inclination, recline
cochl- snail, spiral shell Greek κόχλος (kókhlos) cochlea
coel- hollow Greek κοῖλος (koîlos) blastocoel, coelom, spongocoel
col- strain Latin colare, cōlum colander, coulee, coulis, coulisse, couloir, cullender, cullis, percolate, percolation, percolator, piña colada, portcullis
col-, cult- cultivate, till, inhabit Latin colere, cultus acculturate, acculturation, agriculture, apiculture, bicultural, colonial, colony, countercultural, counterculture, cult, cultivable, cultivate, cultivation, cultivator, cultural, culturati, culture, deculturate, deculturation, incult, inculturation, inquiline, inquilinity, inquilinous, intercultural, multicultural, postcolonial, precolonial, subcultural, subculture
coll- hill Latin collis colliculus
coll- neck Latin collum accolade, col, collar, decollate, decollation, décolletage, encollar
color- color Latin color bicolor, Colorado, coloration, coloratura, concolorous, decolor, discolor, discoloration, encolor, multicolor, quadricolor, recolor, tricolor, unicolor, versicolor
com- friendly, kind Latin cōmis "courteous, kind" comity
con-, co-, col-, com-, cor- with, together Latin cum coagulate, collide, compress, connect, connote, contain, corrode, quondam
con- cone Greek κῶνος (kônos), κωνικός (kōnikós) conic, conical, conicoid, conodont, conoid, conoscope, orthocone, orthoconic
condi- season Latin condire condiment
contra- against Latin contra contraband, contraception, contradict, contraindicate, contrast, contravene
copi- plenty Latin copia copious, copy, cornucopia
copr- dung Greek κόπρος (kópros) coprographia, coprolalia, coprolite, coprology, coprophagia, coprophagy, coprophilia, copropraxia, encopresis, encopretic
copul- bond Latin copula "that which binds" copula, copulation, couple
cor-, cord- heart Latin cor, cordis accord, accordance, accordant, accordatura, concord, concordance, concordant, concordat, corcle, cordate, cordial, cordiality, cordiform, core, courage, courageous, discord, discordance, discordant, discourage, discouragement, encourage, encouragement, misericord, nonaccordant, obcordate, record, scordatura
corac- raven Greek κόραξ, κόρακος (kóraks, kórakos) coracoid
cori- hide, leather Latin corium, corii coriaceous, corious, corium, cuirass, cuirassier, cuirie, excoriate, excoriation
corn- horn Latin cornū bicorn, bicorne, Capricorn, cornea, corneal, corneous, corner, cornicle, corniculate, corniferous, cornification, corniform, cornucopia, quadricorn, quadricornous, tricorn, tricorne, tricornigerous, tricornute, unicorn, unicornous
coron- crown Latin corona, coronare corona, coronation, coronavirus, coroner, coronet, coroniform, Coronilla, crown, incoronate
corpor- body Latin corpus, corporis accorporate, bicorporal, concorporate, concorporation, corporal, corporality, corporate, corporation, corporative, corporature, corporeal, corporeality, corporeity, corps, corpse, corpulence, corpulent, corpus, corpuscle, corpuscular, disincorporate, disincorporation, extracorporeal, incorporal, incorporality, incorporate, incorporation, incorporeal, incorporeality, incorporeity, tricorporal
cortic- bark Latin cortex, corticis cortical, corticate, corticiform, corticifugal, corticipetal, decorticate, decortication, decorticator
cosm- universe Greek κόσμος (kósmos) cosmic, cosmogeny, cosmogony, cosmology, cosmonaut, cosmopolitan, cosmopolite, cosmos, microcosm
cosmet- the art of dress and ornament Greek κοσμεῖν (kosmeîn), κοσμητική (kosmētikḗ) from κόσμος (kósmos) cosmesis, cosmetics, cosmetologist, cosmetology
cost- rib Latin costa accost, bicostate, coast, coastal, costa, costal, costate, curvicostate, entrecôte, infracostal, intercostal, intracoastal, multicostate, quadricostate, supracostal, tricostate, unicostate
cotyl- cup Greek κοτύλη (kotúlē) cotyledon, dicotyledon, dicotyledonous, eudicotyledon, monocotyledon, monocotyledonous, tricotyledonous
-cracy, -crat government, rule, authority Greek κράτος (krátos), κρατία (kratía) acrasia, akrasia, akratic, anocracy, aristocracy, autocracy, autocrat, autocratic, bureaucracy, democracy, democratic, pancratium, plutocracy, technocracy, technocrat, theocracy
crani- skull Greek κρανίον (kraníon) craniologist, craniometry, craniosynostosis, cranium, hemicrania, megrim, migraine
crass- thick Latin crassus crass, crassitude, crassulaceous
crea- make Latin creare, creatus creation, creative, creator, creature, creole, procreation, recreation
cred- believe, trust Latin credere, creditus accreditation, credence, credentials, credibility, credible, credit, creditor, credo, credulity, credulous, creed, discredit, incredible, incredulous, miscreant, recreant
crepid- boot, shoe Greek κρηπίς, κρηπίδος (krēpís, krēpídos), κρηπίδιον, κρηπίδωμα crepidoma
cresc- grow, rise Latin crescere accresce, accrescence, accrescent, accrete, accretion, accrue, concrete, crescendo, crescent, crew, decrease, increase, recruit, recruitment, surcrew
cribr- sieve Latin cribrum, cribrare cribble, cribellate, cribellum, cribrate, cribriform, garble
cric- ring Greek κρίκος (kríkos), κρικοειδής (krikoeidḗs) cricoid, cricoidectomy, Cricosaurus, cricothyroid, cricothyrotomy, cricotomy
crisp- curled Latin crispus crape, crepe, crêpe, crisp, crispate, crispation
crist- crest Latin crista crease, crest, cristate
crit-, crisi- judge, separate Greek κρίνειν (krínein), κρίσις (krísis), κρίμα (kríma) apocrine, crisis, criterion, critic, critical, criticaster, criticise, criticism, critique, diacritic, eccrine, eccrinology, eccrisis, eccritic, endocrine, endocrinology, exocrine, heterocrine, holocrine, hypercriticism, hypocrisy, hypocrite, kritarchy, Kritosaurus, merocrine, syncrisis
cross- fringe, tassel Greek κροσσός (krossós) crossopterygii
cruc- cross Latin crux, crucis cross, crucial, cruciate, crucifer, cruciferous, crucifix, crucifixion, cruciform, crucify, crucigerous, cruise, crusade, cruzeiro, discruciate, excruciate, intercross, recross
crur- leg, shank Latin crus, cruris bicrural, crural, crus, equicrural
-cry wail, shriek Latin critare, from quiritare cry, decry, descry
crypt- hide, hidden Greek κρύπτειν (krúptein) "to hide", κρυπτός (kruptós) apocrypha, apocryphal, archaeocryptography, crypt, cryptanalysis, crypteia, cryptic, cryptobiosis, cryptobiotic, cryptochrome, cryptogam, cryptogenic, cryptography, cryptology, cryptomonad, cryptophyte, cryptosystem, grot, grotesque, grotto
cten- comb Greek κτείς, κτενός (kteís, ktenós) ctenidium, ctenoid, ctenophore
cub- cube Greek κύβος (kúbos) cubic, cuboctahedron, cuboid, hemicube, hypercube
cub- lie Latin cubare incubation, succuba
culin- kitchen Latin culīna culinarian, culinary, kiln
culp- blame, fault Latin culpa culpability, culpable, culprit, exculpate, exculpatory, inculpable, inculpate, inculpatory, mea culpa
cune- wedge Latin cuneus coign, coigne, coin, cuneate, cuneiform, cuneus, encoignure, obcuneate, precuneus, quoin, sconcheon, scuncheon
cur- care for Latin cūra, curare accuracy, accurate, assecure, assurance, assure, curability, curable, curacy, curate, curative, curator, cure, curettage, curette, curio, curiosity, curious, ensure, inaccuracy, inaccurate, incurable, insecure, insecurity, insurability, insurable, insurance, insure, manicure, pedicure, pococurante, proctor, proctour, proctorage, proctorial, procurable, procuracy, procuration, procurator, procure, procurement, proxy, reassurance, reassure, reinsurance, reinsure, scour, scourage, secure, security, sinecural, sinecure, sure, surety
curr-, curs- run, course Latin currere, cursus concur, concurrent, corridor, courier, course, currency, current, cursive, cursor, cursory, discourse, excursion, incur, occur, recur, recursion, recursive, succor
curv- bent Latin curvus "crooked, curved", from curvare "to bend" cavort, curb, curvaceous, curvate, curvation, curvature, curve, curviform, curvilinear, curvity, incurvate, incurvature, incurve, recurvate, recurve, recurvous
cuspid- lance, point Latin cuspis, cuspidis bicuspid, bicuspidate, cusp, quadricuspid, tricuspid
cut- hide, skin Latin cutis cutaneous, cuticle, cuticolor, cuticular, cutin, cutis, cutisector, intracutaneous, subcutaneous
cyan- blue Greek κυανός (kuanós) cyanic, cyanide, cyanogen, cyanophobia, cyanophore, cyanosis, cyanotic, isocyanic
cycl- circle Greek κύκλος (kúklos), κυκλικός (kuklikós) acyclic, anticyclone, anticyclonic, bicycle, cycle, cyclic, cyclide, cycloid, cyclone, cyclops, cyclosis, cyclotomic, dicyclic, eccyclema, epicycle, epicycloid, hemicycle, hemicyclium, heterocyclic, homocyclic, hypercycle, hypocycloid, isocyclic, mesocyclone, monocyclic, polycyclic, pseudocyclosis, tetracyclic, tricycle, tricyclic, unicycle
cylind- roll Greek κυλίνδειν (kulíndein), κύλινδρος (kúlindros) cylinder, cylindric, cylindroid, cylindroma, pseudocylindric
cyn- dog Greek κύων, κυνός (kúōn, kunós) cynic, cynicism, cynodont, cynology, cynophagy, cynophilia, cynophobia, Cynosaurus, cynosure, eucynodont
cyst- capsule Greek κύστις (kústis) cysteine, cystic, cysticercus, cystine, cystolith, cystoma, oocyst, polycystic
cyt- cell Greek κύτος (kútos) astrocyte, cnidocyte, cytapheresis, cytaster, cytokine, cytokinesis, cytokinin, cytology, cytoplasm, cytostasis, cytostatic, exocytosis, gonocyte, hypercytosis, leukocyte, leukocytosis, monocyte, monocytopoiesis, pancytopenia, phagocytosis, polycythaemia, polycythemia, syncytium
da-, dida- learn Greek δάω autodidact, Didache, didact, didactic, didacticism
dacry- tear Greek δάκρυον, δακρύειν, δάκρυμα (dákruma) dacryoadenitis
dactyl- digit, finger, toe Greek δάκτυλος (dáktulos) anisodactyly, antidactylus, arachnodactyly, artiodactyl, brachydactyly, clinodactyly, dactyl, dactylic, dactylology, dactylomancy, dactylomegaly, dactylus, dactyly, date, didactyly, ectrodactyly, heterodactylous, heterodactyly, leptodactylous, monodactyly, oligodactyly, pamprodactyly, pentadactyl, pentadactylous, pentadactyly, perissodactyl, polydactyly, pterodactyl, schizodactyly, syndactylous, syndactyly, tetradactylous, tetradactyly, tridactyly, zygodactyly
dam- tame Greek δάμασις (dámasis), ἀδάμας (adámas) "untameable, invincible" adamant, adamantine, adamantinoma, Damian
damn-, -demn- to inflict loss upon Latin damnum, damnāre condemn, condemnation, damage, damnation, indemnify, indemnity
de- bind Greek δεῖν (deîn), δετός, δέσις (detós, désis), δέμα (déma), δεσμός (desmós), δέσμα (désma) arthrodesis, asyndeton, desmid, desmitis, desmoid, desmoplasia, desmosome, diadem, plasmodesma, polysyndeton, syndesis, syndesmosis, syndetic, syndeton
de- down, away from, removing Latin decay, declare, decline, decompose, dedicate, deduce, defend, deletion, delineate, delude, demarcate, dementia, depress, derogatory, desecrate, descend, destroy, detract
deb- owe Latin debere, debitus debit, debt
dec- ten Greek δέκα (déka) "ten", δεκάς, δεκάδος (dekás, dekádos), δεκάκις (dekákis) "ten times", δεκαπλάσιος (dekaplásios) "ten-fold" decad, decade, decagon, decagram, decahedron, Decalogue, decamer, decamerous, decameter, decapod, decathlon
decim- tenth part Latin decimus, tenth; from decem, ten decimal, decimate, decimation, decimator, decuman, dime
decor- ornament Latin decorus "fit, proper" and decorare "to decorate", from decor "beauty, ornament" and decus "ornament" decor, décor, decorament, decorate, decoration, decorative, decorator, decorous, decorum, redecorate
del- delete Latin delere (from dē + linere) delete, deletion, indelible
delt- D, d Greek Δ, δ, δέλτα (délta) delta, deltoid
dem-, dom- build Greek δέμειν (démein), δῶμα, δῶματος, δομή, δόμος (dómos), δέμας (démas) apodeme, monodomy, opisthodomos, polydomy
dem- people Greek δῆμος (dêmos) Damocles, demagogue, deme, democracy, demographic, demography, demonym, demophobia, demotic, ecdemic, endemic, epidemic, epidemiology, pandemic
den- ten each Latin dēnī denar, denarian, denarius, denary, denier, dinar, dinero, dinheiro
dendr- tree Greek δένδρον (déndron); akin to δρύς (drús) "tree" dendric, dendrite, dendrochronology, dendrogram, dendromancy, Epidendrum, rhododendron
dens- thick Latin densus condensable, condensate, condensation, condensational, condensative, condense, dense, density, nondense, superdense
dent- tooth Latin dens, dentis bident, bidental, dandelion, dental, dentary, dentate, dentation, dentelle, denticity, denticle, denticulate, dentiferous, dentiform, dentifrice, dentigerous, dentil, dentin, dentinal, dentine, dentition, denture, indent, indentation, indenture, interdental, interdentil, intradental, multidentate, quadridentate, trident, tridentate
der- skin Greek δέρειν (dérein), δέρμα, δέρματος (dérma, dérmatos) Dermaptera, dermatology, dermis, ectoderm, endoderm, epidermis, hypodermic, mesoderm, scleroderma, taxidermy, xeroderma
despot- master Greek δεσπότης, δεσπότου, δεσποτικός, δεσποτεία, δεσποτίσκος despot, despotic, despotism
deuter- second Greek δεύτερος (deúteros) deuteragonist, deuteranomaly, deuteranopia, deuteride, deuterium, deuterogamist, deuterogamy, Deuteromycota, deuteron, Deuteronomy, deuterostome
dexi- right Greek δεξιός (deksiós) Dexiarchia
dexter- right Latin dexter ambidexterity, ambidextrous, dexterity, dexterous, dextral, dextrality, dextrin, dextrorse, dextrose
di- two Greek δι- (di-) diatomic, dicot, digamy, diode, dipole
dia- apart, through Greek διά (diá) deacon, diagram, dialysis, diameter
diacosi- two hundred Greek διακόσιοι (diakósioi), διακοσιάκις "two hundred times" diacosigon, diacosipentecontaheptagon
dic-, dict- say, speak, proclaim Latin dīcere, dictus, dictare benediction, condition, contradict, dictate, dictation, dictator, diction, dictionary, dictum, edict, indictment, interdiction, malediction, predict, prediction, valediction, verdict
dida- teach Greek διδάσκειν (didáskein) autodidact, Didache, didact, didactic
digit- finger Latin digitus bidigitate, digit, digital, digitate, digitiform, digitigrade, multidigit, multidigitate
din- terrible, fearfully great Greek δεινός (deinós) dinosaur
dipl- twofold Greek διπλόος (diplóos), δίπλωσις (díplōsis), δίπλωμα (díplōma) diploblasty, diploid, diploidy, diploma, diplomacy, diplomat, diplomatic, diplomatics, diplonema, diplophase, diplopia, diplosis, diplotene, haplodiploid, haplodiploidy
do- give Greek διδόναι (didónai), δοτός, (dotós,), δόσις (dósis), δόμα, δόματος (dóma, dómatos) δῶρον, διδόμενον anecdote, antidoron, antidote, apodosis, dose
doc-, doct- teach Latin docere, doctus docile, doctor, doctrine, document, indoctrinate, indoctrination
dodec- twelve Greek δώδεκα (dṓdeka) dodecagon, dodecahedron, Dodecanese, dodecaphony, dodecastyle, dodecasyllabic, hemidodecahedron
dog-, dox- opinion, tenet Greek δοκεῖν (dokeîn) "to appear, seem, think", δόξα (dóksa) "opinion", δόγμα (dógma) dogma, dogmatic, dogmatism, doxology, heterodox, orthodox, paradox
dol- pain Latin dolere "to grieve", also dolus "grief" and dolor "pain" condolence, dol, doleful, dolorous, indolence
dom- house Latin domus dame, domal, dome, domestic, domesticate, domestication, domesticity, domestique, domicile, domiciliary, major-domo, semidome
domin- master Latin dominus "master"; (from domus "house") beldam, beldame, belladonna, codomain, codominance, codominant, condominium, dam, dame, damsel, danger, demesne, demoiselle, domain, dominance, dominant, dominate, domination, dominative, dominator, dominatrix, domine, domineer, dominicide, dominion, dominium, domino, duenna, dungeon, madam, madame, mademoiselle, madonna, predominance, predominant, predominate, quasidominance, semidominance, subdominant, superdominant
domit- tame Latin domitare, frequentative of domare daunt, domitable, indomitable
don- give Latin dōnum, donare condonation, condone, donate, donation, donative, donator, donatory, donor, pardon, pardonable
dorm- sleep Latin dormire dormant, dormitory
dors- back Latin dorsum disendorse, dorsal, dorsiferous, dorsiflexion, dorsiflexor, dorsigrade, dorsiventral, dorsum, dossier, endorse, endorsee, endorsement, indorse, indorsement, reredos
dra- do Greek δρᾶν (drân), δραστικός (drastikós), δρᾶσις (drâsis), δρᾶμα, δράματος (drâma, drámatos), δραματικός (dramatikós) dramatic, dramaturgy, drastic, melodramatic, monodrama
drach- grasp Greek δράσσεσθαι (drássesthai), δράγμα (drágma), δραχμή (drakhmḗ) didrachm, drachm, drachma, dram, tetradrachm
dram-, drom- run Greek δραμεῖν (drameîn), δρόμος (drómos) aerodrome, anadromous, antidromic, catadromous, diadromous, dromaeosaurid, heterodromous, hippodrome, loxodrome, monodromy, palindrome, syndrome
dros- dew Greek δρόσος, δρόσου (drósos, drósou) drosometer, Drosophila
dry- tree Greek δρῦς, δρυός (drûs, druós), Δρυάς dryad, dryadic, hamadryad
du- two Latin duo deuce, doubt, dual, duality, duet, duo, duplex, duplicity, duumvirate, duumviri, nonduality
dub- doubtful Latin dubius doubt, dubiety, dubious
duc-, duct- lead Latin ducere, ductus abduce, abduct, adduce, adduct, conduce, deduce, induce, introduce, produce, reduce, seduce, traduce
dulc- sweet Latin dulcis billet-doux, dolce, dolcetto, douce, doux, dulcet, dulcian, dulcify, dulcimer, edulcorant, edulcorate, subdulcid
dur- hard Latin durus, durare dour, dura, durability, durable, durain, dural, duramen, durance, durancy, duration, durative, dure, duress, durity, durous, durum, endurable, endurance, endurant, endure, indurate, induration, nondurable, obduracy, obdurate, obduration, perdurable, perdurance, perdure, subdural
dy- two Greek δύο (dúo), δυάς, δυάδος (duás, duádos) dyad, dyadic
dyna- power Greek δύνασθαι (dúnasthai), δυνατός, δύναμις (dúnamis), δυνάστης (dunástēs) aerodynamic, aerodynamics, antidynastic, autodyne, didynamous, dynamic, dynamism, dynamite, dynamo, dynast, dynastic, dynasty, heterodyne, metadynamics
dys- badly, ill Greek δυσ- (dus-) dysentery, dysphagia, dysphasia, dysplasia, dystrophy
ec- out Greek ἐκ (ek) eccentric, ecstasy, ecstatic
ecclesi- assembly, congregation Greek ἐκκλησία (ekklēsía) from ἐκκαλέω (ekkaléō) "I summon" or "I call out" Ecclesiastes, ecclesiastical
eco- house Greek οἶκος (oîkos) ecology, economics, economy, ecumenism
ecto- outside Greek ἐκτός (ektós) ectoderm, ectoparasite, ectotherm
ed-, es- eat Latin edere, esus comedo, comestible, edacity, edibility, edible, escarole, esculent, esurience, esurient, inedia, inedible, inescate, inescation, obese, obesity
eg- goat Greek αἴξ, αἰγός (aíks, aigós) egophony
ego- self, I (first person) Latin, Greek ego, ἐγώ (egṓ) egocentric, egoism, egoistic, egomania, egomaniac
eiren- peace Greek εἰρήνη (eirḗnē) "peace" eirenic, irenic, irenology
electr- amber Greek ἤλεκτρον (ḗlektron) electric, electricity, electrolysis, electrolyte, electromagnetic, electron, electronic, polyelectrolyte
elem-, alm- pity Greek ἔλεος, ἐλέου (éleos, eléou), ἐλεημοσύνη (eleēmosúnē) almoner, alms, eleemosynary
em-, empt- buy Latin emere, emptus adeem, adempt, ademption, exemption, preempt, redeem
eme- vomit Greek ἐμεῖν (emeîn), ἔμετος (émetos) antiemetic, emesis, emetic, emetine, emetophobia, haematemesis
emul- striving to equal, rivaling Latin aemulus, aemulare emulator
en-, el-, em- in Greek ἐν (en) emphasis, enclitic, enthusiasm
enanti- opposite Greek ἐναντίος (enantíos) enantiomer, enantiomerism, enantiomorph, enantiornithine
encephal- brain Greek ἐγκέφαλος (enképhalos) encephalopathy
endo- inside, within Greek ἔνδον (éndon) endocardial, endocerid, endocrine, endocytosis, endogamy, endogenous, endoscopy, endoskeleton, endosperm, endospore
engy- narrow Greek ἐγγύς (engús) Engystomops, hypengyophobia
ennea- nine Greek ἐννέα (ennéa), ἐννεάς, ἐννεάδος (enneás, enneádos) ennead, enneadic, enneagon, enneagram, enneahedron, enneamer, enneastyle, enneasyllabic, enneode
ens- sword Latin ensis ensiferous, ensiform
eo-, eos- dawn, east Greek Ἠώς, Ἕως (Ēṓs, Héōs) Eocene, eohippus, Eosentomon, eosin, eosinophil, eosinophilic, eozoic
ep-, epi- upon Greek ἐπί (epí) ephedra, ephemeral, ephemeris, epicenter, epidemic, epilog, epiphany, episteme, epistemic, epistemology, epitaph, epitaphios, epithet, epitome, epoch, eponymous
equ-, -iqu- even, equal, level Latin aequus equal, equanimity, equate, Equator, equilibrium, equinox, equipoise, equity, equivalence, equivocal, equivocate, iniquity
equ- horse Latin equus equestrian
ere- row Greek ἐρέσσειν (eréssein), ἐρέτης (erétēs) "rower", ἐρετμόν (eretmón), εἰρεσία trierarch
erg-, org-, urg- work Greek ϝέργον (wérgon), έργον (érgon), ἐργάτης (ergátēs), ὄργανον (órganon), ὀργανικός (organikós), ὄργια (órgia) allergic, allergy, argon, demiurge, dramaturgy, endoergic, energetic, energy, erg, ergate, ergatocracy, ergodic, ergometer, ergonomics, ergophobia, exoergic, gamergate, georgic, heterorganic, homorganic, liturgy, metallurgy, microorganism, organ, organic, organism, organist, organize, organogenesis, organoid, organoleptic, orgiastic, orgy, parergon, surgeon, synergism, synergy, theurgic, theurgist, theurgy, zymurgy
erot- (sexual) love Greek ἔρως, ἔρωτος (érōs, érōtos) erogenous, erotic, erotomania, erotophilia, erotophobia
err- stray Latin errare aberrance, aberrancy, aberrant, aberration, err, errant, erratic, erratum, erroneous, error, inerrant
erythr- red Greek ἐρυθρός (eruthrós), ἐρύθημα (erúthēma) erythema, Erythraean, erythraemia, erythroblastopenia, erythrocyte, erythrocytosis, erythromelalgia, erythrophobia, erythrophore, erythroprosopalgia
eso- within Greek ἔσω (ésō) esophoria, esoteric, esotericism, esotropia
eth- custom, habit Greek ἐθεῖν (etheîn), ἦθος (êthos) ethic, ethics, ethology, ethos
ethm- sieve, sift Greek ἠθεῖν (ētheîn), ἠθμός (ēthmós); ἤθειν (ḗthein) ethmoid
ethn- people, race, tribe, nation Greek ἔθνος (éthnos), ἐθνικός (ethnikós) ethnarch, ethnarchy, ethnic, ethnoarchaeology, ethnography, ethnomusicology, polyethnic
etym- true Greek ἔτυμος (étumos) etymologic, etymologicon, etymologist, etymologize, etymology, etymon
eu- well, good Greek εὖ (eû) aneuploidy, eudaemon, eudemon, eukaryote, euphony, euphoria, euphoric, euploid, euthanasia
eur- wide Greek εὐρύς (eurús), εὖρος "breadth, width" aneurysm, Europe, eurypterid, microaneurysm
ex-, e-, ef- from, out Latin ex exclude, exist, exit, extend, extrude
exo- outside Greek ἔξω (éksō) exogamy, exoplanet, exoskeleton, exosome, exosphere, exoteric, exothermic, exotic, exoticism, exotropia
extra- outer Latin extra, extraneus and exterus estrange, estrangement, exterior, extra, extraneous, extraordinary, strange
extrem- outermost, utmost Latin extremus extreme, extremity, extremophile
fa-, fat- say, speak Latin fari, see also fateri affable, bifarious, confess, defamation, fable, fame, fascinate, fate, ineffability, infamy, infancy, infant, infantry, nefarious, preface, profess
fab- bean Latin faba faba bean
fac-, fact-, -fect-, -fic- do, make Latin facere, factus affair, affect, affectation, amplify, artifact, artifice, benefactor, benefice, benefit, confection, counterfeit, defeat, defect, disaffect, edifice, effect, effectible, effection, effective, effectivity, effector, effectual, effectuality, effectuate, effectuation, efficacious, efficacity, efficacy, efficiency, efficient, enface, enfacement, facade/façade, face, facet, facette, facial, faciend, facient, facile, facilitate, facilitation, facilitative, facilitator, facilitatory, facility, facinorous, facsimile, fact, faction, factional, factionary, factious, factitious, factor, factorable, factorial, factory, factotum, factual, fake, fashion, feasible, feat, feature, feckless, fiat, forfeit, infect, inofficious, interoffice, laissez-faire, malefaction, manufacture, modify, nonofficial, office, official, officiant, officiary, officiate, officious, olfaction, omnificence, omnificent, parfait, perfect, perfecta, perfectibility, perfectible, perfection, perfective, perfector, pluperfect, prefect, prefectural, prefecture, prequalification, proficiency, proficient, profit, profitability, profitable, profiteer, profiterole, prolific, qualification, quasiperfect, rarefy, refactorable, refashion, refect, refection, refectory, reinfect, remanufacture, resurface, reunification, sacrifice, scientific, semelfactive, suboffice, subprefect, suffice, sufficiency, sufficient, superficial, superficiality, surface, surfeit, surficial, transfection, trifacial, trifecta, uniface, unifacial, unifactorial, unification
falc- sickle Latin falx, falcis defalcation, falcate, falciform, falchion, falcon
fall-, fallac-, fals- false, deceive Latin fallere, falsus, fallax, fallacis default, fail, fallacious, fallacy, fallible, false, falsetto, falsify, falsity, fault
famili- a close attendant Latin famulus familiarity, family
fasc- bundle Latin fascis fasciculation, fascism
fatu- foolish, useless Latin fatuus fatuous, infatuation
feder- treaty, agreement, contract, league, pact Latin foederare, from foedus (genitive foederis); see also fides "faith" confederacy, confederation, federal, federate, federation
fel- cat Latin feles, felis Felinae, feline
felic- happy, merry Latin felix, felicis felicity
fell- suck Latin fellare fellation
femin- women, female Latin femina femininity
femor- thigh Latin femur (genitive femoris) femoral, femur
fend-, fens- strike Latin fendere, -fensus defend, fend, offend, offense
fenestr- window Latin fenestra defenestration
fer- to bear, carry Latin ferre aquifer, circumference, confer, conifer, defer, differ, ferry, fertile, infer, Lucifer, offer, prefer, refer, suffer, transfer, vociferous
ferv- boil, glow Latin fervere ferment, fervent, fervid, fervor, perfervid
feroc- fierce Latin ferox, ferocis ferocity
ferr- iron Latin ferrum ferrous
fet- stink Latin fetere fetid, fetor
fic- fig Latin ficus Ficus, fig
fid-, fis- faith, trust Latin fides "faith, trust", from fidere "to trust" confidante, confidence, confident, diffident, faith, fealty, fidelity, fiduciary, infidel, perfidious, perfidy
fig-, fing-, fict- to form, shape Latin fingere "to touch, handle; devise; fabricate, alter, change" configure, disfigure, effigy, feign, fiction, fictitious, figment, figurine, nonfiction, transfigure
fil- thread Latin filum defile, filament, file, filigree, fillet, profile
fili- son Latin filius affiliation
fin- end Latin finis affinity, confine, define, final, finale, finance, fine, finish, finite, infinite, refine
find-, fiss- cleave, split Latin findere, fissus fission, fissure
firm- firm, strong Latin firmus, firmare affirm, confirm, confirmation, firm, firmament, infirm
fistul- hollow, tube Latin fistula fistula
fix- attach Latin fixare, frequentative of figere affix, fix, fixation, fixture, prefix, suffix, transfix
fl-, fla- blow Latin flāre, flātus afflatus, conflate, deflate, flatulence, flatus, flavor, flute, inflate, insufflation, soufflé, sufflate
flacc- flabby Latin flaccus, flaccere flaccid
flav- yellow Latin flavus flavonoid
flect-, flex- bend Latin flectere, flexus circumflex, deflect, flex, flexible, flexile, flexion, flexor, inflect, inflection, reflect, reflection, reflex
flig-, flict- strike Latin flīgere, flictus afflict, conflict, inflict, profligacy, profligate
flor- flower Latin flos, floris floral, florid
flu-, fluv-, flux- flow Latin fluere, fluxus affluent, confluence, effluent, fluctuate, fluctuation, fluency, fluent, fluid, fluidity, flush, fluvial, flux, influence, influx, superfluous
foc- hearth Latin focus bifocal, focal, focus
fod-, foss- dig Latin fodere, fossus fossil
foen- hay Latin foenum Foeniculum
foli- leaf Latin folium defoliant
font- spring Latin fons, fontis font, fontal, fontanelle
for- bore, drill Latin forare, foratus foralite, foramen, foraminifer, perforation
form- shape Latin forma conform, deform, form, formal, formation, formula, formulate, inform, perform, reform, uniform
formic- ant Latin formica formaldehyde, formic acid
fornic- vault Latin fornix, fornicis fornication
fort- strong Latin fortis force, fort, forte, fortify, fortitude, fortress
fove- shallow round depression Latin fovea fovea
frag-, frang-, -fring-, fract- break Latin frangere, fractus defray, diffract, fractal, fraction, fractious, fracture, fragile, fragment, frangible, fray, infraction, infringe, refract, refractory, refrain
frater-, fratr- brother Latin frater fraternal, fraternity
fric-, frict- rub Latin fricare, frictus dentifrice, friction
frig- cold Latin frigere frigid, frigorific
front- forehead Latin frons, frontis confront, frontage, frontal
fruct-, frug- fruit Latin frux, fructis fructose, frugivorous
fug-, fugit- flee Latin fugere centrifuge, fugacious, fugitive, refuge
fum- smoke Latin fumus fume, fumigation
fund- bottom Latin fundare "to found", from fundus "bottom, foundation" found, founder, foundation, fund, fundament, fundamental, fundamentalism, profound, profundity
fund-, fus- pour Latin fundere, fusus confound, diffusion, effusion, effusive, found, fusion, infusion, perfusion, profuse, profusion, refund, suffusion, transfusion
fulmin- flash Latin fulmen "lightning flash" fulminant, fulminate, fulmination
fung-, funct- do Latin fungi, functus function, fungibility
fur-, furt- thief, steal Latin fur (genitive furis) "thief", furare ferret, furtive
furc- fork Latin furca bifurcation
fusc- dark Latin fuscus fuscous, obfuscate, obfuscation
galact- milk Greek γάλα, γάλακτος (gála, gálaktos) galactagogue, galactic, galactorrhea, lactose, polygala, polygalactia
gam- marriage, wedding Greek γάμος (gámos), γαμεῖν (gameîn), γαμέτης (gamétēs), γαμετή (gametḗ) agamic, agamogenesis, agamospermy, agamy, allogamy, anisogamete, anisogamy, apogamy, autogamy, cleistogamous, cleistogamy, cryptogam, deuterogamist, deuterogamy, digamous, digamy, endogamous, endogamy, exogamous, exogamy, gamete, gametic, gametocyte, gametogenesis, gametophyte, geitonogamy, heterogametic, heterogamous, heterogamy, homogametic, karyogamy, misogamy, monogamous, monogamy, oogamy, planogamete, plasmogamy, polygamist, polygamy
gamb- leg Latin gamba gam, gambit, gambol, gammon
gamm- G, g Greek Γ, γ, γάμμα (gámma) gamma
gar- chatter Latin garrire gargantuan, gargle, gargoyle, garrulous, jargon
gargal- tickle Greek γαργαλίζειν (gargalízein), γαργαλιζόμενον (gargalizómenon), γαργαλισμός (gargalismós) gargalesis, gargalesthesia, hypergargalesthesia
gargar- gargle Greek γαργαρίζειν (gargarízein), γαργαρισμός (gargarismós), γαργαρεών gargarize
gastr- stomach Greek γαστήρ, γαστρός (gastḗr, gastrós) epigastric, epigastrium, gasteroid, gastric, gastrin, gastritis, gastroenterologist, gastroenterology, gastrolith, gastronomic, gastronomy, gastroparesis, gastropod, gastroptosis, gastroschisis, gastrotrich, mesogastric, Myxogastria
ge-, geo- earth Greek γῆ (gê), γαῖα, γαίας (gaîa, gaías), γεω- (geō-) apogee, biogeography, epigeous, Gaia, geocentric, geocentrism, geode, geodesy, geodetic, geography, geoid, geology, geomancy, geometry, geomorphology, geophysicist, geophysics, georgic, Georgics, geosphere, geostatic, geostrophic, geosynchronous, geosyncline, hypogeous, hypogeum, Pangea, perigee
geiton- neighbor Greek γείτων, γείτονος (geítōn, geítonos), γειτόνημα geitonogamy
gel- icy cold Latin gelum congeal, congelation, gel, gelati, gelatin, gelatinous, gelation, gelato, gelée, gelid, gelifluction, gelignite, jellification, jelly
gen-, gon- birth, beget, race, kind Greek γίγνεσθαι (gígnesthai), and related γένος (génos), γενετικός (genetikós), γένεσις (génesis); see also γενεά (geneá) allergen, anagenesis, antigen, autogenesis, autogenous, biogenesis, dysgenic, endogen, endogenous, epigene, epigenesis, epigenetics, epigone, erogenous, Eugene, eugenic, eugenics, exogenous, gametogenesis, gene, genealogy, genesis, genetic, genocide, genotype, gonad, heterogeneous, homogenesis, homogenetic, homogeneous, hydrogen, hypogene, hypogenesis, hypogenic, hypogenous, monogenic, oogenesis, paragenesis, pathogen, polygenous, progenesis, pseudogene, spermatogenesis
gen- beget Latin gignere, genitus, genus (genitive generis), see also generare congenial, engender, gender, generate, generation, genial, genius, genital, genitive, genteel, gentle, genuine, genus, indigenous, ingenious, ingenuous, primogenitor, progeny
gephyr- bridge Greek γέφυρα (géphura), γεφυρόω gephyrophobia
ger- old Greek γέρων, γέροντος (gérōn, gérontos) "old man", γηράσκω "grow old" erigeron, gerascophobia, geriatric, geriatrics, gerontocracy, gerontology, gerontophile, gerontophilia, gerontophobia, gerontoplast, gerousia, progeria, progeroid
ger-, gest- bear, carry Latin gerere, gestus agger, congest, digest, gerundive, gestation, register, suggest, vicegerent
geran- crane Greek γέρανος (géranos), γεράνιον (geránion), γερανώδης Geranium
germ- sprout Latin germen, germinis germ, German, germane, germicide, germinal, germinate, germination, nongermane, regerminate
geu- taste Greek γεύειν (geúein), γεύεσθαι (geúesthai), γεῦσις, γευόμενον ageusia, dysgeusia, hypergeusia, hypogeusia, parageusia
glabr- hairless Latin glaber glabella, glabellar, glabrate, glabrescent, glabrous
glaci- ice Latin glacies glacé, glacial, glaciation, glacier, glacious, glacis, glance
gladi- sword Latin gladius gladiator, gladiolus
glauc- gray Greek γλαυκός (glaukós), γλαυκότης, γλαύξ, γλαῦκος glaucophane, Glaucopsyche
glia- glue Greek γλία (glía) glial, glioblastoma, glioma, gliosis, microglia, neuroglia
glob- sphere Latin globus global, globate, globe, globose, globosity, globular, globule, globulin, inglobate
glori- glory Latin gloria gloriation, glorification, glorify, gloriole, glorious, glory, inglorious, vainglorious, vainglory
gloss-, glot- tongue Greek γλῶσσα (glôssa), γλωττίς (glōttís) aglossia, anthropoglot, aryepiglottic, diglossia, epiglottis, gloss, glossary, glossophobia, glottis, heterogloss, heteroglossia, idioglossia, isogloss, monoglot, monoglottism, polyglot, polyglottism
glut- rump Greek γλουτός (gloutós) gluteus
glutin- glue Latin gluten, glutinis agglutinant, agglutinate, agglutination, agglutinative, glue, glutelin, gluten, glutinosity, glutinous, nonagglutinative
glyc- sweet Greek γλυκύς (glukús) glycogen, glycogenesis, glycogenolysis, glycolipid, glycophyte, glycoprotein, glycoside, glycosidic, hypoglycaemia
glyph- carve Greek γλύφειν (glúphein), γλυφή (gluphḗ), γλυπτός (gluptós), γλυπτικός (gluptikós) aglyphous, anaglyph, ditriglyph, ditriglyphic, glyph, glyptic, Glyptodon, glyptograph, hieroglyph, hieroglyphic, monotriglyph, opisthoglyphous, petroglyph, proteroglyphous, solenoglyphous
gnath- jaw Greek γνάθος (gnáthos), γναθμός Agnatha, agnathous, chilognath, compsognathus, endognathion, epignathous, exognathion, gnathic, gnathophyma, hypognathous, hystricognath, mesognathion, mesognathous, prognathism
gno- know Greek γιγνώσκειν (gignṓskein), γνῶναι, γνωτός (gnônai, gnōtós), γνωστός (gnōstós), γνωστικός (gnōstikós), γνῶσις (gnôsis), γνῶσμα, γνώμη (gnôsma, gnṓmē), γνώμων (gnṓmōn) agnosia, agnostic, agnosticism, anagnorisis, diagnosis, dysanagnosia, gnomic, gnomon, gnomonic, gnosia, gnosis, Gnostic, gnosticism, pathognomonic, physiognomy, prognosis, telegnosis
gnosc-, -gnit- know Latin gnoscere acquaint, acquaintance, agnition, agnize, cognition, cognitional, cognitive, cognitivity, cognizable, cognizance, cognizant, cognize, cognoscence, cognoscenti, cognoscible, cognovit, connoisseur, ennoble, ennoblement, ignoble, ignorant, ignoscible, incognito, nobiliary, nobilitate, nobilitation, nobility, noble, note, notice, noticeable, notion, notional, notionality, notoriety, notorious, precognition, quaint, reacquaint, recognition, recognize, reconnaissance, reconnoiter, reconnoitre
gon- corner, angle, knee Greek γωνία (gōnía), γόνυ (gónu) goniometer, gonion, gonioscope, gonitis, gonyaulax, gonycampsis, hexagon, pentagon, polygon, trigon, trigonometry
grad-, gred-, gress- walk, step, go Latin gradi, gressus "to step", from gradus "step" aggradation, aggression, antegrade, anterograde, centigrade, degrade, degree, egress, gradation, grade, gradient, gradine, gradual, graduality, graduate, graduation, gree, ingress, multigrade, nongraduate, postgraduate, progradation, prograde, progress, regress, retrogradation, retrograde, saltigrade, tardigrade, transgress
gramm- letter, writing Greek γράφειν (gráphein), γράμμα, γράμματος (grámma, grámmatos), γραμματικός (grammatikós) anagram, anagrammatic, diagram, diagrammatic, engram, epigram, epigrammatic, grammar, grammatic, grammaticist, hologram, lipogram, monogram, pangrammatic, pentagram, program, programmatic, telegram, telegramme, tetragram, tetragrammaton, trigram
gran- grain Latin grānum degranulation, engrain, filigree, garner, garnet, grain, granary, grange, granger, granite, granivore, granivorous, granivory, granola, granular, granularity, granulate, granulation, granule, grenade, grogram, grosgrain, ingrain, multigrain, pomegranate
grand- grand Latin grandis aggrandisement, grandee, grandeur, grandific, grandiloquent, grandiloquous, grandiose, grandiosity, grandioso, grandity
graph- draw, write Greek γράφειν (gráphein), γραφικός (graphikós), γραφή (graphḗ), γραφία (graphía), γραφεῖον (grapheîon) allograft, anepigraphic, autograft, autograph, digraph, epigraphic, epigraphy, graft, graph, grapheme, graphemics, graphene, graphic, graphite, graphology, graphomania, heterograph, hexagraph, holography, homograph, isograft, logographic, micrograph, monograph, orthography, paragraph, photograph, photographic, photomicrograph, polygraph, pseudepigraphy, syngraft, telegraph, telegraphy, tetragraph, trigraph
grat- thank, please Latin grātus, see also gratia aggrace, agree, agreeable, agreeance, agreement, congratulant, congratulate, congratulatory, congree, disagree, disagreeable, disagreement, disgrace, grace, graciosity, gracioso, gracious, gratification, gratify, gratis, gratitude, gratuitous, gratuity, gratulant, gratulate, gratulation, gratulatory, grazioso, gree, ingrate, ingratiate, ingratiation, ingratitude, maugre, noncongratulatory, nongratuitous
grav- heavy Latin gravis aggravate, aggravation, aggravative, aggravator, aggrieve, aggrievement, degravation, gravamen, grave, gravid, gravida, gravidity, gravitas, gravitate, gravitation, gravitational, gravity, grief, grieve, grievance, grievant, grievous, ingravescence, ingravescent, multigravida, multigravidity, nongravitational, nulligravida, primigravida, reaggravate, supergravity
greg- flock, herd Latin grex, gregis aggregate, aggregation, aggregator, congregant, congregate, congregation, congregational, desegregate, desegregation, disaggregate, disgregate, disgregation, egregious, gregarian, gregarine, gregarious, intercongregational, segregate, segregation
gryp- hooked Greek γρυπός (grupós), γρυπότης, γρύπωσις (grupótēs, grúpōsis) arthrogryposis, Grypoceras, Gryposaurus
gubern- govern, pilot Latin gubernare gubernatorial
gust- taste Latin gustus disgust, gustatory, gusto, gustoso
gutt- drop Latin gutta gout, gutta, guttate, guttifer, guttiform
guttur- throat Latin guttur goitre, guttural
gymn- nude Greek γυμνός (gumnós) gymnasium, gymnast, gymnastics, gymnophobia, gymnoplast, gymnosophist, gymnosperm, gymnospore
gyn-, gynaec- woman Greek γυνή, γυναικός, (gunḗ, gunaikós) acrogynous, androgyne, androgynous, androgyny, epigyne, epigynous, epigynum, gymnogynous, gynaeceum, gynaecocracy, gynarchy, gyne, gynecocracy, gynecology, gynecomastia, gynodioecious, gynoecium, gynoid, gynophobia, heterogynous, hypogynous, misogynist, monogyny, oligogyny, philogyny, polygynist, polygyny
gyr- ring Greek γῦρος (gûros), γυρός (gurós) agyria, autogyro, gyre, gyrectomy, gyrencephalic, gyrodyne, gyroid, gyromagnetic, gyromancy, gyroscope, gyrosphere, gyrostat, gyrostatic gyrotropic, gyrus, microgyrus, micropolygyria, pachygyria, polygyria, polymicrogyria, ulegyria
gyrin- tadpole Greek γυρός, γυρῖνος (gurós, gurînos), γυρινώδης (gurinṓdēs) Gyrinophilus
hab-, -hib-, habit-, -hibit- have Latin habere, habitus ability, able, debenture, debile, debilitate, debility, debit, debitor, debt, debtor, devoir, disability, disable, disenable, disinhibit, disinhibition, due, duty, enable, enablement, endeavor, exhibit, exhibition, exhibitor, habeas corpus, habendum, habenula, habile, habilitate, hability, habit, habitable, habitance, habitant, habitat, habitation, habitator, habitual, habituate, habituation, habitude, habitudinal, inability, indubitable, inhabile, inhabit, inhabitable, inhabitant, inhabitation, inhibit, inhibition, inhibitory, nonhabitual, prebend, prebendary, prohibit, prohibition, prohibitive, prohibitory, provender, rehabilitant, rehabilitate, rehabilitation, rehabilitative, rehabilitator
hadr- thick Greek ἁδρός (hadrós) hadrocodium, hadron, hadrosaurid
haem-, hem- blood Greek αἷμα, αἵματος (haîma, haímatos) anaemia, haematemesis, haematopoiesis, haemophilia, haemophobia, haemoptysis, haemorrhage, haemorrhoid, haemostatic, hematocrit, hematogenesis, hematoma, hematophagy, hematopoiesis, hematopoietic, hemocoel, hemocyte, hemoglobin, hemophagy, hemophilia, hemophiliac, hemoptysis, hemorrhage, hemorrhagic, hemorrhea, hemorrhoid, hemorrhoidectomy, hemostat, hemotherapy, hyperaemia, hyperemia, hyphaema, hyphema, polycythaemia
haere- choose, take Greek αἱρεῖν (haireîn), αἱρεῖσθαι (haireîsthai), αἱρετός (hairetós), αἱρετικός (hairetikós), αἵρεσις (haíresis) aphaeresis, diaeresis, heresiarch, heresy, heretic, plasmapheresis, synaeresis, syneresis
hal- salt Greek ἅλς, ἁλός (háls, halós), ἅλινος (hálinos) halide, halieutic, halite, halochromic, halochromism, halogen, halomancy, halophile, halophyte, oxohalide, thermohaline
hal-, -hel- breathe Latin halare, halatus anhelation, anhele, anhelous, exhalable, exhalant, exhalation, exhale, halitus, inhalant, inhalation, inhale, halitosis
hapl- simple, single Greek ἁπλοῦς (haploûs), ἅπλωσις (háplōsis), ἅπλωμα (háplōma) haplochromine, haplodiploid, haplodiploidy, haplography, haploid, haplology, haplont, haplontic, haplophase, haplopia, haplosis, haplotype
haur-, haust- draw Latin haurire, haustus exhaust, exhaustible, exhaustion, exhaustive, hauriant, haurient, haustellate, haustellum, haustorium, haustrum, inexhaustible, nonexhaustive
heb- youth Greek ἥβη (hḗbē), ἡβητικός (hēbētikós), ἔφηβος (éphēbos), ἡβᾶν (hēbân), ἡβάσκω, ἡβητής (hēbētḗs) ephebeum, ephebia, ephebiatrics, ephebic, ephebiphobia, ephebos, hebephobia, hebephrenia, hebetic, hebiatrics, hebophile, hebophilia
hed- sit Greek ἕδος, ἕδεος (hédos, hédeos), ἕδρα (hédra), ἕζεσθαι (hézesthai) cathedra, chair, dodecahedron, endohedric, ephedra, exedra, hexahedron, octahedron, pentahedroid, pyritohedron, rhombohedron, sanhedrin, synedrion, tetrahedroid, trapezohedron, trisoctahedron
hed- pleasant, sweet Greek ἥδεσθαι, ἡδόμενον, ἡδύς (hēdómenon, hēdús), ἡδύτης, σϝηδύς, ἡδονή (hēdonḗ) hedonics, hedonism, hedonist, hedonistic, hedonology, hyphedonia
heg- lead Greek ἄγω, ἡγεῖσθαι (hēgeîsthai), ἡγούμενος (hēgoúmenos), ἡγεμών (hēgemṓn), ἡγεμονία, ἡγεμονικός diegesis, diegetic, eisegesis, exegesis, exegete, exegetic, hegemon, hegemonic, hegemony, hegumen, hypodiegetic, metadiegetic, protohegumen
heli- sun Greek ἥλιος (hḗlios) aphelion, heliocentric, heliocentrism, heliodor, heliograph, heliolatry, heliomania, heliometer, heliopause, heliophobia, heliophyte, Helios, helioscope, heliosphere, heliostat, heliotherapy, heliotrope, heliotropism, helium, parhelion, perihelion
helic- something twisted or spiral Greek ϝελίσσω, ἑλίσσειν (helíssein), ἕλιξ, ἕλικος (héliks, hélikos), ἕλιξις, ἕλιγμα (héliksis, héligma), (helikoeidḗs) anthelix, antihelix, helicine, helicograph, helicoid, helicopter, helicospore, helix
Hell- Greece, Hellas Greek Ἑλλάς, ἑλλάδος (Hellás, helládos) Hellenic, Hellenism, Hellenistic
helminth- worm Greek ἕλμινς, ἕλμινθος (hélmins, hélminthos) anthelmintic, helminth, helminthic, helminthoid
helot- enslaved Greek Εἵλως, Εἵλωτος, Εἱλώτης Helot, helotism, helotry
hem- blood Greek

hemer- day Greek ἡμέρα (hēméra) Decameron, ephemeral, ephemeris, ephemeron, ephemerous
hemer- tame Greek ἥμερος (hḗmeros), ἡμερότης (hēmerótēs) hemeroby, hemerochora, hemerophile
hemi- half Greek ἥμισυς (hḗmisus) anhemitonic, hemiballismus, hemicryptophyte, hemicube, hemicycle, hemidesmosome, hemimelia, hemimetabolic, hemimetabolism, hemimetaboly, hemiparesis, hemiplegia, hemipolyhedron, hemisphere, hemitonic
hemo- blood Greek

hen- one Greek ἕν (hén), ἑνάς, ἑνάδος (henás, henádos), ἕνωσις (hénōsis) enosis, enotikon, henad, hendiadys, henotheism, hyphen
hendec- eleven Greek ἕνδεκα (héndeka) hendecagon, hendecagram, hendecagrammic, hendecane, hendecasyllabic, hendecasyllable
hepat- liver Greek ἧπαρ, ἥπατος (hêpar, hḗpatos), ἡπατικός (hēpatikós) heparin, hepatic, hepatitis, hepatocyte, hepatology, hepatomancy, hepatoscopy, hepatotoxic, hepatotoxin, hepatotropic
hept- seven Greek ἑπτά (heptá) heptachord, heptagon, heptagram, heptagraph, heptahedron, heptamer, heptameric, heptameter, Heptateuch, heptathlete, heptathlon, heptatonic, heptode
her-, heir- heir Latin heres (genitive heredis) heir, heiress, hereditary, heredity, heritage, inherit
here-, hes- cling, stick Latin haerere, haesus adhere, adherence, adherend, adherent, adhesion, adhesive, cohere, coherence, coherent, cohesion, cohesive, decoherence, hesitancy, hesitant, hesitate, hesitation, hesitator, incoherent, inhere, inherency, inherent, inhesion, nonadherence, nonadherent, nonadhesive
herald- messenger, envoy Latin heraldus herald, heraldic, heraldry
herb- grass Latin herba herbal, herbicide, herbivore
heres-, heret- choose, take Greek αἱρεῖν (haireîn) "to take, choose" heresy, heretic, heretical
herm- Hermes Greek Ἑρμῆς (Hermês), ἑρμηνεύς (hermēneús), ἑρμηνεύω (hermēneúō), ἑρμηνευτικός (hermēneutikós), ἑρμήνευσις, ἑρμήνευμα herm, hermaphrodite, hermeneutic, hermeneutics, hermetic
hero- hero Greek ἥρως, ἥρωος (hḗrōs, hḗrōos), ἡρωίνη (hērōínē), ἡρωϊκός (hērōïkós), ἡρωϊσμός (hērōïsmós) antihero, hero, heroic, heroine, heroism
herp- creep Greek ἕρπειν (hérpein), ἕρπης, ἕρπητος (hérpēs, hérpētos) herpes, herpetology
heter- different, other Greek ἕτερος (héteros) heterochromatin, heterodox, heterodoxy, heterogeneity, heterogeneous, heterophobia, heterosexual, heterosis, heterotic
heur- find Greek εὑρίσκειν (heurískein), εὕρηκα (heúrēka), εὕρημα (heúrēma) eureka, heuristic, metaheuristic
hex- six Greek ἕξ (héks), ἑξάς, ἑξάδος (heksás, heksádos) hexachord, hexad, hexadic, hexagon, hexagram, hexahedron, hexamer, hexamerous, hexameter, hexapod, hexastyle, hexasyllabic, Hexateuch, hexatonic, hexode, tetrahemihexahedron
hi- gape Latin hiare dehisce, dehiscence, dehiscent, hiatal, hiatus, indehiscence, indehiscent, inhiation
hibern- wintry Latin hibernus hibernation
hidrot- sweat Greek ἱδρώς, ἱδρῶτος (hidrṓs, hidrōtos), ἱδροῦν (hidroûn), ἵδρωσις (hídrōsis) anhidrosis, dyshidrosis, dyshidrotic, hematidrosis, hidrocystoma, hidropoiesis, hidroschesis, hidrosis, hidrotic, hyperhidrosis, hypohidrosis
hiem- winter Latin hiems hiemal
hier- holy, sacred Greek ἱερός (hierós) hierarch, hierarchy, hieratic, hierocracy, hierodeacon, hieroglyph, hieroglyphic, hierogram, hierolatry, hieromonk, hierurgy
hipp- horse Greek ἵππος (híppos) ephippium, hippeis, hippocampus, hippodrome, hippology, Hippolyte, hippomancy, hippophagy, hippophile, hippophobia, hippopotamus, parahippocampus
hirsut- hairy Latin hirtus, hirsutus hirsute
hispid- bristly Latin hispidus hispidity, hispidulous
histri- actor Latin histrio, histrionis histrionic
hod- way Greek ὁδός (hodós) anode, cathode, diode, electrode, episode, ergodic, exodos, exodus, heptode, herpolhode, hodometer, hydathode, method, methodic, Methodism, Methodist, methodology, octode, parodos, pentode, period, periodic, synod, tetrode, triode
hol- whole Greek ὅλος (hólos), ὁλικός (holikós) catholic, holiatry, holism, holistic, holography, holomorphic, holonomy
hom- same Greek ὁμός (homós) homiletic, homily, homogeneous, homograph, homologous, homology, homonym, homophobia, homophone, homosexual, homozygous
homal- even, flat Greek ὁμαλός (homalós) "even", from ὁμός (homós) "same" anomalous, anomaly
home- like Greek ὅμοιος (hómoios) homeostasis
homin- human Latin homo, hominis hominid
homoe-, home- like, similar Greek ὅμοιος (hómoios), ὁμοῖος, ὁμοιότης homeopathy, homeostasis, homeothermy, homoeopathy, homoiotherm, homoiothermic
honor- esteem Latin honos, honoris dishonorable, honorable, honorarium
hor- boundary Greek ὅρος (hóros), ὁρίζειν (horízein) aorist, aphorism, aphorismus, aphorize, diorite, horizon, horopter, horotelic
hor- hour Greek ὥρα (hṓra) horologist, horology, horometry, horoscope
horm- that which excites Greek ὁρμᾶν, ὁρμεῖν (hormân, hormeîn), ὁρμή (hormḗ), ὅρμησις (hórmēsis), ὁρμῶν (hormôn) horme, hormephobia, hormesis, hormetic, hormic, hormone
hort- garden Latin hortus, horti horticulture
hospit- host Latin hospes, hospitis hospice, hospital, hospitality, inhospitable
host- enemy Latin hostis hostile
hum- ground Latin humus, humare exhume, exhumation, human, humane, humanity, humus, inhume
hyal- glass Greek ὕαλος (húalos) hyaline, hyaloid
hybr- wantonness Greek ὕβρις (húbris), ὑβρίζω, ὕβριστος, ὑβριστικός (hubrízō, húbristos, hubristikós), ὑβρισμός, ὕβρισμα, ὑβριστής hubris, hubristic, hybris, hybristic
hydn- truffle Greek ὕδνον (húdnon) hydnoid, Hydnum
hydr- water Greek ὕδωρ, ὕδατος (húdōr, húdatos), ὕδρα (húdra) clepsydra, dehydrate, hydathode, hydatid, hydatidosis, hydra, hydrant, hydrate, hydraulic, hydraulics, hydrochloric, hydrodynamics, hydroelectric, hydrogen, hydrologist, hydrology, hydrolysis, hydromancy, hydrophile, hydrophilic, hydrophily, hydrophobia, hydrophobic, hydroponic, hydrosphere, hydrostat, hydrostatic, hydrothermic, hydrous, hydrozoa, polyhydric
hygie- healthy Greek ὑγιής (hugiḗs), ὑγίεια (hugíeia), ὑγιεινός (hugieinós), ὑγιάζειν Hygieia, hygiene, hygienic, hygienics, hygienist
hygr- wet Greek ὑγρός (hugrós) hygric, hygroma, hygrometer
hymen- skin or membrane Greek ὑμήν, ὑμένος (humḗn, huménos) hymen, hymenium, hymenomycete, hymenophore, hymenoplasty, Hymenoptera, hymenorrhaphy, hymenotomy
hyo- U-shaped Greek ὑοειδής (huoeidḗs) hyoid, hyostyly
hyp- under Greek ὑπό (hupó) hyphen, hypoallergenic, hypodermic, hypogene, hypothermia, hypotonic, hypoxemia, hypoxia
hyper- above, over Greek ὑπέρ (hupér) hyper, hyperbaric, hyperbola, hyperbole, Hyperion, hyperlink, hyperoxia, hyperpyrexia, hyperthermia, hypertonic
hyph- weave Greek ὑφαίνειν (huphaínein), ὕφασμα, ὑφή (huphḗ) "web" hypha, hyphomycete, hyphopodium
hypn- sleep Greek ὕπνος (húpnos) hypnagogia, hypnagogic, hypnolepsy, hypnophobia, hypnopompia, hypnopompic, hypnosis, hypnotherapy, hypnotic, hypnotist, hypnotize
hyps- height Greek ὕψι, ὕψιστος, ὕψος (húpsos), ὑψοῦ, ὑψόθεν hypsography, hypsometer, hypsophobia
hys- hog Greek ὗς (hûs), ὕαινα (húaina) hyena, hyenoid
hyster- womb Greek ὑστέρα (hustéra) hysteralgia, hysteratresia, hysterectomy, hysteria, hysteric, hysterosalpingography
hyster- later Greek ὑστερεῖν (hustereîn), ὕστερος (hústeros), ὑστέρησις (hustérēsis), ὑστέρημα (hustérēma) hysteresis, hysteretic, hysteron proteron
i- go Greek ἰέναι (iénai), ἴμμεναι, ἰόν, ἰών (ímmenai, ión, iṓn) anion, anionic, cation, cationic, ion, ionic, ionize, polyanion, polycation
iatr- heal Greek ἰᾶσθαι (iâsthai), ἰατρός (iatrós), ἰατρικός (iatrikós), ἰατρεύειν (iatreúein), ἰατρεία (iatreía), ἴασις, ἴαμα iatrogenic, physiatry, podiatrist, podiatry, psychiatrist, psychiatry
ichthy- fish Greek ἰχθύς, ἰχθύος (ikhthús, ikhthúos) ichthyology, Ichthyophaga, ichthyophobia, ichthyoplankton, ichthyosis
icos- twenty Greek ϝεικοσι, εἴκοσι (eíkosi), εἰκοσάς, εἰκοσάκις "twenty times" hemi-icosahedron, icosagon, icosahedron
icter- jaundice Greek ἴκτερος (íkteros), ἰκτερικός (ikterikós), ἰκτεριάω icteric, icterogenic, icterohemorrhagic, icterohepatitis, icteroid, icterus
id- shape, form, picture Greek εἶδειν (eîdein), εἶδος (eîdos) eidetic, eidolon, eidos, idol, idolater, idolatry, idyll, idyllic, idyllist, pareidolia
ide- idea, thought Greek ἰδεῖν (ideîn), ἰδέα (idéa) ideogram, ideologue, ideology
idi- own, peculiarity Greek ϝίδιος, ἴδιος (ídios), "private, personal, one's own" idiolect, idiom, idiopathic, idiopathy, idiophone, idiosyncrasy, idiosyncratic, idiot, idiotic
ign- fire Latin ignis igneous, ignite, ignition
imagin- copy Latin imāgō, imāginis image, imagine
imbr- heavy rain Latin imber, imbris ignimbrite, imbrex, imbricate, imbrication, imbriferous
in- sinew Greek ἴς, ἰνός (ís, inós), ἰνίον (iníon) inion, inotrope, inotropic
in-, il-, im- in, on Latin in illuminate, import, incur, intend, invite
in-, il-, im-, ir- not, un- (negation) Latin in- illicit, impossible, inimical, insane, irrational
inan- empty, vain Latin inanitio "emptiness" and inanitas "worthlessness", from inanire "to empty", from inanis "empty, void, worthless" inane, inanition, inanity
infra- below, under Latin infra infrared, infrastructure
insul- island Latin insula insular, insulation
inter- among, between Latin inter (preposition) intercollegiate, intermission, intersection
intra- within Latin intra intramural, intravenous
irasc-, irat- be angry Latin irasci "grow angry", from ira "anger" irascible, irate, ire
irid- rainbow Latin iris iridescent
is-, iso- equal, same Greek ϝίσϝος (wíswos), ἴσος (ísos) isogloss, isograph, isometric, isomorphic, isosceles, isotonic, isotropic
ischi- hip joint Greek ἰσχίον (iskhíon), ἰσχιαδικός (iskhiadikós) ischiadic, ischium, sciatic, sciatica
iter- again Latin iterum, iterare iteration
itiner- journey Latin iter, itineris itinerary
jac- lie Latin jaceo "to be thrown" adjacency, adjacent, circumjacency, circumjacent, ease, easy, interjacent, interjoist, joist, nonadjacent, subjacent, superjacent
jac-, -ject- cast, throw Latin jacio (also spelled iacio), iectus abject, adjectival, adjective, conjectural, conjecture, deject, dejection, disject, disjection, ejaculate, ejaculation, ejaculatory, eject, ejecta, ejection, ejective, ejectment, ejector, inject, injection, injective, injector, interject, interjection, interjectional, interjector, interjectory, introject, introjection, introjective, jactation, jactitation, jaculate, jaculation, jaculator, jaculatory, jaculiferous, jet, jetsam, jettison, nonobjective, object, objectification, objection, objectionable, objective, objectivity, objector, parget, project, projectile, projection, projective, projector, reject, rejectamenta, rejection, subject, subjection, subjective, subjectivity, subjicible, surjection, surjective, traject, trajectile, trajection, trajectory, trijet
janu- door Latin janua janitor, January
joc- jest Latin jocus (also spelled iocus) jewel, jewelry, jocose, jocosity, jocular, jocularity, joke, jongleur, juggle
judic- judge Latin iudex, iūdicis adjudicate, adjudication, adjudicative, adjudicator, adjudicatory, extrajudicial, injudicious, judge, judgement, judgment, judgmental, judicable, judicative, judicator, judicatory, judicature, judicial, judiciary, judicious, nonjudgmental, nonjudicial, prejudge, prejudgment, prejudice, prejudicial, quasijudicial
jug- yoke Latin jugo, jugum conjugal, subjugate
jung-, junct- join Latin iungo, junctus adjoin, adjoint, adjunct, adjunction, adjunctive, conjoin, conjoint, conjunct, conjunction, conjunctive, disjoin, disjoint, disjunct, disjunction, disjunctive, enjoin, enjoinder, enjoinment, injunction, injunctive, join, junction, juncture, junta, junto, nondisjunction, nonjoinder, rejoin, rejoinder, sejoin, sejungible, subjoin, subjoinder, subjunctive, surrejoinder
junior- younger Latin junior junior, juniority
jus-, jur- law, justice Latin ius, iuris abjure, jurisprudence, jury, just, justice, objurgate, perjury
juv-, jut- help Latin juvo, jutus adjument, adjutant, adjutor, adjutory, adjutrix, coadjutant, coadjutor, injucundity, jocund, jocundity
juven- young, youth Latin juvenis juvenile, rejuvenate
juxta- beside, near Latin juxta juxtaposition
kilo- thousand Greek χίλιοι (khílioi) kilobyte, kilogram, kilometer
kine-, cine- movement, motion Greek κινεῖν (kineîn), κίνησις (kínēsis), κίνημα (kínēma) akinesia, akinesis, akinete, akinetic, cinema, cinematic, diakinesis, dyskinesia, dyskinetic, hyperkinesia, hyperkinesis, hyperkinetic, hypokinesia, hypokinesis, hypokinetic, kinematics, kinescope, kinesiologist, kinesiology, kinesis, kinesthetic, kinetic, kineticism, kinetics, kinetochore, kinetophobia, photokinesis, telekinesis
klept- steal Greek κλέπτειν (kléptein), κλέπτης (kléptēs) kleptocracy, kleptomania, kleptophobia, kleptoplasty
kudo- glory Greek κῦδος (kûdos) kudos
lab-, lep- grasp, seize, take Greek λαμβάνειν (lambánein), λῆψις (lêpsis), λῆμμα (lêmma) analemma, analemmatic, analeptic, catalepsy, cataleptic, dilemma, dilemmatic, epilepsy, epileptic, hypnolepsy, hysteroepilepsy, metalepsis, narcolepsy, nympholepsy, octosyllabic, procatalepsis, prolepsis, proleptic, proslepsis, syllabic, syllabism, syllable, syllabogram, syllepsis, trisyllabic, trisyllable
lab-, laps- slide, slip Latin labi, lapsus collapse, collapsible, elapse, labile, lapse, prolapse, relapse
labi- lip Latin labia, labiae bilabial, bilabiate, infralabial, labial, labiate, labium, sublabial, supralabial
labor- work Latin labor collaborate, collaboration, collaborative, collaborator, elaborate, elaboration, elaborative, elaborator, labor, laboratory, laborious
lacer- tear Latin lacer laceration
lacrim- cry, tears Latin lacrima lachrymal, lachrymose, lachrymosity, lacrimal, lacrimation, lacrimator, lacrimatory, lacrimous
lact- milk Latin lac, lactis, lactare ablactate, ablactation, lactary, lactase, lactate, lactation, lactational, lacteal, lacteous, lactescent, lactic, lactose, laitance, latte
lamin- layer, slice Latin lāmina bilamellate, bilaminar, lame, lamé, lamella, lamellar, lamellate, laminate, lamination, laminose, laminous, multilaminar, omelet, omelette, trilaminar, unilaminar
lamp- shine, torch Greek λάμπειν (lámpein), λαμπάς (lampás) lamp, lamprid, Lampris
lapid- stone Latin lapis, lapidis dilapidate, dilapidation, lapidarian, lapidary, lapidate, lapidation, lapidator, lapideous, lapidescence, lapidescent, lapidicolous, lapidification, lapillation, lapilli
larg- large Latin largus allargando, enlarge, enlargement, largamente, largando, large, largess, largesse, largition, largo
larv- ghost, mask Latin larva larva, larvae, larval
lat- broad, wide Latin latus laticlave, latifoliate, latifundium, latitude, latitudinal, latitudinarian, latitudinous
later- side Latin latus, lateris ambilateral, ambilaterality, bilateral, bilaterality, collateral, contralateral, equilateral, extralateral, inequilateral, ipsilateral, lateral, laterality, matrilateral, multilateral, nonlateral, patrilateral, plurilateral, quadrilateral, semilatus, septilateral, trilateral, unilateral
laud-, laus- praise Latin laudare "to praise" laud, laudable, laudanum, laudation, Lauds, summa cum laude
lav- wash Latin lavare launder, laundry, lava, lavation, lavatory, lave, lavender, lavish, lotion
lax- not tense, slack Latin laxus, laxare delay, disrelish, laches, lax, laxation, laxative, laxity, leasable, lease, relax, relaxant, relaxation, relay, release, relish, sublease
lecith- egg yolk Greek λέκιθος (lékithos) lecithin
led-, les-, -lid-, -lis- hurt, strike Latin laedere, laesus, -lidere allision, collide, collision, elide, elidible, elision, illesive, lesion
leg- say Greek λέγειν (légein), λέγεσθαι (légesthai), λεκτός (lektós), λεκτικός (lektikós), λέξις (léxis), λεξικός (lexikós), λεξικόν (lexikón), λόγος (lógos), (logḗ), λεγόμενον (legómenon), λογεῖον alexia, alexithymia, apologetic, apologia, apology, dialect, dialectic, dialectologist, dialectology, dialog, dialogue, dyslexia, dyslexic, dyslogia, dyslogism, ethnolect, legomenon, lexeme, lexicography, lexicology, lexicon, lexigram, lexis, logic, logion, logos, prolegomenon
leg-, lect- choose, gather, read Latin legere coil, colleague, collect, collectible, collection, collective, collector, college, collegial, collegiality, collegian, collegiate, collegium, counterintelligence, cull, deselect, diligence, diligent, elect, electability, electable, electee, election, elective, elector, electoral, electorate, eligibility, eligible, elite, illegibility, illegible, ineligibility, ineligible, intellect, intellection, intellectual, intellectuality, intelligence, intelligent, intelligentsia, intercollegiate, lectern, lectin, lection, lectionary, lector, lectorate, lecture, legend, legendary, legendry, legibility, legible, legion, legionary, legionnaire, legume, leguminous, lesson, neglect, negligee, negligence, negligent, negligible, nonelective, nonelite, nonnegligible, nonselective, postelection, predilect, predilection, preelection, prelect, prelection, prelector, preselect, recollect, recollection, reelect, reelection, religion, reselect, sacrilege, select, selectance, selectee, selection, selective, selectivity, selector, superselection, uniselector
leg- law Latin lex, legis allege, disloyal, disloyalty, extralegal, illegal, legal, legality, legific, legislate, legislation, legislative, legislator, legislature, legitim, legitimacy, legitimate, loyal, loyalty, nonlegal, privilege
leg- send Latin legare (from legis) allegation, delegable, delegacy, delegate, delegatee, delegation, delegator, delegatory, league, legacy, legatary, legate, legatee, legatine, legation, legato, nondelegate, relegate, relegation, superdelegate
lei- smooth Greek λεῖος (leîos) leiomyoma
lekan- dish, pot Greek λεκάνη (lekánē) lekane
leni- gentle Latin lenis, lenire leniency, lenient, leniment, lenis, lenition, lenitive, lenitude, lenity
leon- lion Latin leo, leonis dandelion, Leo, leonine, Leopold
lep- flake, peel, scale Greek λέπειν (lépein), λεπτός (leptós), λεπίς, λεπίδος (lepís, lepídos) antilepton, lepidolite, Lepidoptera, Lepidorhombus, lepidote, lepidotrichia, leprosy, leptocyte, leptogenesis, lepton, leptophyllous
leuc-, leuk- white Greek λευκός (leukós) aleukemia, aleukocytosis, leucism, leucocyte, leucopenia, leucoplast, leukemia, leukocytopenia, leukopenia, leucophore
lev- lift, light, raise Latin levare "lighten, raise", from levis "light" (in weight) alleviate, alleviation, bas-relief, counter-relief, deleverage, elevate, elevation, elevator, leaven, legerity, levade, Levant, levee, lever, leverage, leviable, levitate, levitation, levity, levy, relevé, relief, relieve, sublevation, superelevation
liber- free Latin liber, liberare deliver, deliverance, illiberal, illiberality, liberal, liberality, liberalize, liberate, liberation, liberator, libertarian, liberticide, libertinage, libertine, liberty, ultraliberal
libr- book Latin liber, libri interlibrary, libel, libellant, libellee, libellous, librarian, library, libretto
lig- bind Latin ligare, ligatus ligament, ligature
limac- slug Latin limax, limacis limacine, limacoid, limacon, Limax
limpa- clear, water Latin limpa "water" limpid, limpidity, lymph
line- line Latin linea align, alignment, ambilineal, ambilineality, bilinear, collinear, collinearity, collineation, curvilinear, curvilinearity, delineate, delineation, delineavit, line, linea, lineage, lineal, lineament, linear, linearity, lineate, lineation, matrilineal, multicollinearity, multilinear, nonalignment, noncollinear, nonlineal, nonlinear, nonlinearity, quasilinear, realign, realignment, rectilinear, rectilinearity, sesquilinear, sublineage, sublinear, supralinear, trilinear, unilinear
line- smear, smudge Latin linere delete, deletion, indelible, liniment
lingu- language, tongue Latin lingua bilingual, bilinguality, bilinguous, collingual, elinguation, interlanguage, language, ligula, ligular, ligule, lingua franca, lingual, linguiform, linguine, multilingual, prelingual, quadrilingual, sublingual, trilingual
linqu-, lict- leave Latin linquere, lictus relict, relinquish
lip- fat Greek λίπος (lípos) lipolysis, lipophile, lipophilic, lipopolysaccharide, lipoprotein, synaloepha
liqu- flow Latin liquere deliquesce, liquefy, liqueur, liquid, liquor, prolix
lit- prayer, supplication Greek λιτή (litḗ), λιτανεία (litaneía) litany
liter- letter Latin littera alliteration, alliterative, biliteral, biliterate, illiteracy, illiterate, literacy, literal, literary, literate, literati, literatim, literation, literator, literature, multiliteral, nonliteral, nonliterary, nonliterate, obliterate, obliteration, preliterate, quadriliteral, transliteracy, transliterate, transliteration, triliteral, uniliteral
lith- stone Greek λίθος (líthos) aerolithology, endolith, endolithic, epilithic, lithagogue, lithic, lithography, lithology, lithophile, lithophone, lithophyte, lithosphere, lithotomy, megalith, Mesolithic, microlite, monolith, monolithic, Neolithic, Paleolithic, photolithography, phytolith
loc- place Latin locus, locare accouchement, allocate, bilocation, bilocular, cislocative, collocation, couch, couchant, dislocate, dislocation, interlocal, lieu, local, locale, locality, locate, location, locative, locator, locomotion, loculament, locular, locule, loculose, loculus, locus, milieu, multilocal, multilocation, multilocular, nonlocal, relocate, relocation, translocate, translocation, translocative, trilocular, unilocular
log-, -logy word, reason, speech, thought Greek λόγος (lógos), λογία (logía) analogy, anthology, apology, biology, dialogue doxology, ecology, epilogue, etymology, eulogy, geology, ideologue, logarithm, logic, logogram, logophile, meteorology, monologue, morphological, neologism, neurology, philology, prologue, psychology, tautology, terminology, theology, toxicology, trilogy, zoology
long- long Latin longus allonge, elongate, elongation, longa, longanimity, longe, longeron, longinquity, longitude, longitudinal, longum, lunge, lungo, oblong, prolong, prolongation, purloin
loqu-, locut- speak Latin loqui allocution, circumlocution, colloquial, colloquy, elocution, eloquent, eloquence, grandiloquent, interlocution, loquacious, loquacity, magniloquent, obloquy, soliloquy
luc- bright, light Latin lūx (genitive lūcis), lucere elucidate, elucidation, elucubrate, elucubration, lucent, lucid, lucidity, Lucifer (bearer of light), luciferase, luciferin, luciferous, lucifugal, lucubrate, lucubration, luculent, noctilucent, pellucid, pellucidity, relucent, semipellucid, translucency, translucent, translucid, translucidus
lud-, lus- play Latin ludere, lusus allude, collude, delude, elude, elusive, elusory, illude, illusion, ludicrous, lusory, prelude
lumin- light Latin lumen, luminis, luminare dislimn, enlumine, illuminable, illuminance, illuminant, illuminate, illuminati, illumination, illumine, intraluminal, limn, lumen, luminaire, luminal, luminance, luminant, luminaria, luminary, lumine, luminescence, luminescent, luminiferous, luminosity, luminous, relumine, subluminal, subluminous, superluminal, transluminal
lu-, luv-, lut- wash Latin luere (see also diluere, fluere and pluere) abluent, ablution, alluvium, colluvium, deluge, depollute, diluent, dilute, dilution, dilutive, diluvial, diluvian, diluvium, elute, elution, eluvial, elluviation, eluvium, illuviation, illuvium, lutaceous, lutite, pollution
lun- moon Latin lūna circumlunar, cislunar, demilune, luna, lunar, lunate, lunatic, lunation, lune, lunette, luniform, lunisolar, mezzaluna, mezzelune, plenilunary, semilunar, sublunar, sublunary, superlunary, translunar
lut- yellow, golden Latin lūtum, lūteus corpus luteum, luteal, lutein, luteinizing hormone, luteous
ly-, lysi-, lyt- dissolving Greek λύειν (lúein), λυτός (lutós), λυτικός (lutikós), λύσις (lúsis) analyse, analysis, analytic, aparalytic, autolysis, catalyse, catalysis, catalyst, catalytic, cytolysis, dialysis, electrolysis, electrolyte, electrolytic, Hippolyte, hydrolysis, hydrolyte, hydrolytic, lysigeny, lysine, lysis, lysosome, lytic, meta-analysis, palsy, paralyse, paralysis, paralytic, plasmolysis, proteolysis
macer- lean Latin macer emaciate, macerate, meager
macr- long Greek μακρός (makrós), μακρότης (makrótēs) "length" amphimacer, macrobiotic, macrocosm, macroeconomics, macron, macrophage
magn- great, large Latin magnus magnanimity, magnanimous, magnate, magnificent, magnify, magnitude, magnum
Greek μάγνης, μάγνητος (mágnēs, mágnētos) bioelectromagnetism, biomagnetism, diamagnetic, diamagnetism, electromagnet, geomagnetic, magnesium, magnet, magnetic, magnetism, magnetite, magnetize, magnetobiology, magnetologist, magnetometer, magnetosome, manganese, paramagnetic, paramagnetism
maj- greater Latin major, majus majesty, major, majority, majuscule, mayor, semimajor, supermajority
mal- bad, wretched Latin malus dismal, grand mal, malady, malaise, malediction, malefaction, malevolent, malfeasance, malfunction, malice, malicious, malignancy, malnourished, malodorous, premalignant
mamm- breast Latin mamma mammal, mammary
man-, mant- crazy Greek μαίνεσθαι (maínesthai), μανία (manía), μανικός (manikós), μάντις hypermania, hypomania, kleptomania, mania, maniac, manic, megalomania, monomania, pyromania, pyromaniac
man- flow Latin mānāre, mānātus emanant, emanate, emanation, immanant, immanation
man- stay Latin manēre, mansus immanence, immanent, impermanence, impermanent, maisonette, manor, manorial, manse, mansion, ménage, menagerie, menial, meiny, messuage, nonpermanence, nonpermanent, permanence, permanent, quasipermanent, remain, remainder, remanence, remanent, remnant, semipermanent
man-, manu- hand Latin manus adminicle, amanuensis, Bimana, bimanous, bimanual, emancipate, mainour, maintain, manacle, manage, manageable, management, managerial, mandamus, mandate, manège, maneuver, manicure, manifer, manifest, manifestation, manifesto, maniform, maniple, manipulation, manipulative, maniraptoran, maniraptoriform, manner, mansuetude, manual, manuary, manubrial, manubrium, manuduction, manufacture, manumission, manumit, manuport, manure, manus, manuscript, mortmain, Quadrumana, quadrumanous
mand-, -mend- order, commit Latin mandāre, mandātus command, commandant, commandment, commend, commendable, commendam, commendation, commendatory, counterdemand, countermand, demand, demandant, encomienda, mandamus, mandatary, mandate, mandator, mandatory, recommend, recommendation, remand, remandment
mania mental illness, craziness Greek μανία (manía) kleptomania, mania, maniac, pyromania
mar- sea Latin mare, maris maar, mariculture, marina, marinade, marinara, marinate, marination, marine, mariner, maritime, submarine, ultramarine
mas- male, man Latin mās, māris, masculus, masculi emasculate, emasculation, emasculator, masculate, masculine, masculinity
mater-, matr- mother Latin mater, matris maternal, maternity, matrimony, matrix, matron
maxim- greatest Latin maximus maxim, maximal, maximum, submaximal
mechan- machine or instrument Greek μῆχος, μηχανή (mēkhanḗ), μηχανικός (mēkhanikós) machine, mechane, mechanics, mechanism, mechanize, mechanobiology, mechanophilia, mechanophobia
medi-, -midi- middle Latin medius, mediare dimidiation, immediate, intermediary, mean, media, median, mediate, mediation, medieval, mediocre, Mediterranean, medium, moiety, multimedia, postmeridian, submediant
meg-, megal- great, large Greek μέγας, μεγάλου (mégas, megálou) acromegaly, Megacles, megacycle, megalomania, megalopolis, megaphone
mei- less Greek μεῖον (meîon), μείωσις (meíōsis) ameiosis, ameiotic, meiobenthos, meiosis, meiotic
melan- black, dark Greek μέλας, μέλανος (mélas, mélanos), μελανότης amelanism, aphaeomelanism, eumelanin, hypermelanic, melancholic, melancholy, Melanesia, melanin, melanism, melanoblastoma, melanocyte, melanoma, melanophobia, melanophore, melanosis, melatonin, neuromelanin, pheomelanin
melior- better Latin meliorare "to improve", from melior "better" ameliorate, amelioration, meliorism
meliss- bee Greek μέλισσα (mélissa) melissophobia
mell- honey Latin mel, mellis melliferous, mellific, mellifluence, mellifluent, mellifluous, melliloquent, mellivorous
memor- remember Latin memor commemorate, immemorial, memoir, memorabilia, memorable, memorandum, memorial, memory, remembrance
men- month Greek μήν (mḗn) menopause, menorrhea
mening- membrane Greek μήνιγξ, μῆνιγγος (mēninx, mēningos) leptomeninges, meninges, meningioma, meningitis, meninx
mend- defect, fault Latin mendax "lying, a liar", from menda "defect, fault" amend, amendment, emend, mendacious, mendacity
menstru- monthly Latin menstruus menstrual, menstruation
mensur- measure Latin mensura "measurement", from metiri "to measure" commensurable, commensurate, dimension, immense, incommensurable, incommensurate, measure
ment- mind Latin mens, mentis comment, dement, dementia, memento, mental, mentality, mention, reminisce, reminiscence
mer- part Greek μείρεσθαι (meíresthai), μέρος (méros) antimere, antimeria, biopolymer, decamer, decamerous, dimer, dimeric, dimerism, dimerous, enantiomer, enneamer, heptamer, heterodimer, heterotetramer, hexamer, homodimer, homotetramer, isomer, isomeric, isomerism, mereology, merisis, merism, meristem, meristematic, meristic, meromorphic, metamere, metamerism, Moirai, monomer, monomeric, octamer, oligomer, oligomeric, pentamer, pentamerous, photopolymer, phytomer, polymer, tautomerism, telomer, telomere, tetramer, tetrameric, trimer, trimerize
merc- reward, wages, hire Latin merx (genitive mercis) amercement, commerce, commercial, market, mercantile, mercenary, mercery, merchandise, merchant, mercy, noncommercial
merge-, mers- dip, plunge Latin mergere demerge, demersal, demerse, demersion, emerge, emergence, emergency, emergent, emersion, immerge, immergence, immerse, immersible, immersion, immersive, merge, reemerge, reemergence, reimmerse, submerge, submergence, submerse, submersible, submersion
mes- middle Greek μέσος (mésos) Mesolithic, mesophile, mesophilic, mesoscopic, mesosphere, mesozoic
met-, meta- above, among, beyond Greek μετά (metá) metabolism, metalogic, metamorphic, metamorphosis, metaphase, metaphor, metaphysics, metastatic, meteor, method
metall- mine Greek μέταλλον (métallon), μεταλλικός (metallikós) dimetallic, electrometallurgy, hydrometallurgy, metallic, metalloid, metallophobia, metallophone, metallurgist, metallurgy, organometallic, polymetal, polymetallic, pyrometallurgy, tetrametallic, trimetallic
meter-, metr- measure Greek μέτρον (métron) anemometer, anemometric, antisymmetric, antisymmetry, asymmetric, asymmetry, axonometric, barometer, barometric, bathometer, diameter, diametric, dysmetria, graphometer, hexameter, hygrometer, hygrometry, isodiametric, isometric, isoperimetric, meter, metre, metric, metrology, metronome, monosymmetric, parameter, parameterize, parametric, parametrize, pentameter, perimeter, polymeter, symmetric, symmetry, telemeter, telemetric, telemetry, tetrameter, thermometer, trimeter, trimetric
metr- mother Greek μήτηρ, μητρός (mḗtēr, mētrós), μητρικός (mētrikós) haplometrosis, metrocyte, metropolis, pleometrosis
mic- grain Latin mica mica, micelle
micr- small Greek μικρός (mikrós), μικρότης microbe, microcosm, microeconomics, micrometer, microphone, microscope, microscopic
migr- wander Latin migrare countermigration, emigrant, emigrate, emigration, émigré, immigrant, immigrate, immigration, migrant, migrate, migration, migrational, migratory, nonmigratory, remigrant, remigrate, remigration, transmigrant, transmigrate, transmigration, transmigratory
milit- soldier Latin mīles, militis militant, military, militia
mill- thousand Latin mille mile, millennium, million
millen- thousand each Latin milleni millenarian, millenary
mim- repeat Greek μιμεῖσθαι (mimeîsthai), μιμητικός (mimētikós), μίμος (mímos) mime, mimeograph, mimesis, mimetic, mimic, necromimesis, pantomime, phenomime, psychomime, psychomimetic
min- jut Latin minere eminence, eminent, imminence, imminent, preeminence, preeminent, prominence, prominent, promontory, supereminence, supereminent
min- less, smaller Latin minor, minus minority, minuscule, minutiae
mina- lead Latin minare, variant of minari amenable, demeanor, menace, promenade
minth- mint Greek μίνθα (míntha), μίνθη (mínthē), μινθάριον Acanthomintha, Mentha, menthol, mint, Minthostachys
mir- wonder, amazement Latin miror, mirari, miratus sum admire, miracle, mirror
mis- hate Greek μισεῖν (miseîn), μῖσος (mîsos) misandrist, misandry, misanthrope, misanthropy, misocainea, misogamist, misogamy, misogynist, misogyny, misoneism, misopaedia, misophonia, misotheism
misc-, mixt- mix Latin miscere, mixtus admix, admixtion, admixture, commix, commixture, immiscibility, immiscible, immix, immixture, intermix, intermixture, maslin, meddle, mestizo, Métis, miscellanea, miscellaneous, miscellany, miscibility, miscible, mix, mixture, permiscible, permix, permixtion, postmix, premix, promiscuity, promiscuous, remix
miser- unhappy, wretched Latin miser commiseration, miser, miserable, misery
mit-, miss- send Latin mittere, missus admissibility, admissible, admission, admissive, admit, admittatur, admittee, commissar, commissariat, commissary, commission, commissive, commissural, commissure, commit, commitment, committal, committee, compromis, compromise, compromissary, decommission, decommit, decommitment, demise, demiss, demit, dimissory, dimit, dismiss, dismissal, dismissive, emissary, emission, emissitious, emissive, emissivity, emit, emittent, entremet, fideicommissary, fideicommissum, impermissible, inadmissibility, inadmissible, intermission, intermittent, intromissible, intromission, intromissive, intromit, intromittent, manumission, manumit, mess, message, messenger, missile, mission, missionary, missive, mittimus, noncommittal, omissible, omission, omissive, omit, permissible, permission, permissive, permissory, permit, permittee, premise, premiss, premit, pretermission, pretermit, promise, promisee, promissive, promissory, readmission, readmit, recommit, remise, remiss, remissible, remission, remissive, remissory, remit, remittal, remittance, remittee, remittence, remittent, remittitur resubmit, retransmission, retransmit, subcommittee, submission, submissive, submit, surmise, transmissibility, transmissible, transmission, transmissive, transmit, transmittal
mit- thread Greek μίτος (mítos) mitochondrion, mitosis, mitospore
Greek μνᾶ (mnâ) mina, mna
mne- memory Greek μνᾶσθαι (mnâsthai), μνήμη (mnḗmē) amnesia, amnesty, anamnesis, anamnestic, dysmnesia, Mneme, mneme, mnemonic
mod- measure, change Latin modus "measure" accommodate, accommodation, accommodative, accommodator, bimodal, bimodality, bimodular, bimodule, commode, commodification, commodious, commodity, decommodification, demodulate, demodulation, demodulator, immodest, immodesty, intermodal, intermodulation, modal, modality, mode, model, moderate, moderation, moderato, moderator, modern, modernity, modest, modesty, modicum, modification, modify, modiolus, modular, modularity, modulate, modulation, modulator, module, modulo, modulus, multimodal, multimodality, postmodern, postmodernity, Quasimodo, remodel, remodulate, supermodel, trimodal, trimodality, ultramodern, ultramodernity, unimodal, unimodality, unimodular, unimodularity
mol- grind Latin mola, molere, molitus molar
moll- soft Latin mollis emollience, emollient, moil, mollescence, mollescent, mollient, mollification, mollify, mollitude, mollusc, molluscicide, molluscivore, mollusk
mon- alone, only Greek μόνος (mónos), μονάς, μονάδος (monás, monádos) monachism, monad, monadic, monarchy, monastery, monastic, monasticism, monatomic, monism, monist, monk, monoid, monolith, monometer, monopod, monopoly, monopsony, monotone
mon- warn Latin monere, monitus admonish, admonishment, admonition, admonitor, admonitory, monition, monitor, monitory, monument, monumental, premonition, premonitory, resummon, summon
monil- string of beads Latin monile monilifer, moniliform, Moniliformida
monstra- show Latin monstrāre counterdemonstration, counterdemonstrator, demonstrable, demonstrant, demonstrate, demonstration, demonstrative, demonstrator, demonstratory, indemonstrable, monster, monstrance, monstration, monstrosity, monstrous, muster, premonstrant, premonstrate, Premonstratensian, premonstration, premonstrator, remonstrance, remonstrant, remonstrate, remonstration, remonstrative
mont- mountain Latin mons, montis amount, Belmont, cismontane, dismount, insurmountable, intermontane, montage, montan, Montana, montane, montant, monticello, monticule, montiform, montigenous, mount, mountaineer, mountainous, nonremontant, paramount, piedmont, remontancy, remontant, remontoire, remount, submontane, surmount, surmountable, tantamount, tramontana, tramontane, transmontane, ultramontane, Vermont
mor- foolish, dull Greek μωρός (mōrós) moron, moronic, oxymoron, oxymoronic, sophomore, sophomoric
mor- pause, delay Latin morari "to delay", from mora "a pause, delay" demur, demure, demurrable, demurrage, demurral, demurrer, mora, moratorium, remora, remorate
mor- custom, disposition Latin mos, moris immoral, immorality, moral, morale, morality, mores, morigerous, morose, morosity
mord- bite Latin mordere, morsus mordacious, mordacity, mordancy, mordant, mordent, mordente, mordicancy, mordicant, mordication, mordicative, morsel, morsitation, premorse, remorse
morph- form, shape Greek μορφή (morphḗ) allomorph, amorphous, anamorph, anamorphic, anamorphism, anamorphosis, anthropomorphism, apomorphy, autapomorphy, automorphism, catamorphism, dimorphic, dimorphism, dysmorphic, dysmorphophobia, ectomorph, ectomorphic, enantiomorph, enantiomorphic, endomorph, endomorphic, epimorphism, geomorphology, hemimorphic, holomorph, holomorphic, holomorphism, homeomorphic, homeomorphism, homomorphic, homomorphism, hylomorphism, hypermorphosis, isomorphic, isomorphism, mesomorph, mesomorphic, metamorphic, metamorphism, metamorphosis, monomorphic, monomorphism, morpheme, Morpheus, morphine, morphology, morphosyntactic, morphosyntax, paramorph, peramorphism, peramorphosis, perimorph, plesiomorphy, polymorphic, polymorphism, pseudomorph, synapomorphy, teleomorph, teleomorphic, theriomorphic, trimorphic, trimorphism, zoomorph, zoomorphism
mort- death Latin mors, mortis antemortem, immortal, immortality, mortal, mortality, mortician, mortiferous, mortification, mortuary
mov-, mot-, mut- move, motion Latin movere, motus commotion, emotion, immobile, immutable, mobile, mobility, momentum, motile, motion, motive, motor, move, movement, mutation, mutiny, permutation, promote, promotion, removal, remove, subpermutation, transmove, transmutable, transmutate, transmutation, transmute, transmutual, trimotor
mulg-, muls- milk Latin mulgere emulsion
multi- many, much Latin multus multilingual, multiple, multiplex, multiplication, multiplicity, multiply, multitude, multitudinous
mund- world Latin mundus anima mundi, antemundane, demimondaine, demimonde, extramundane, intramundane, map, mondain, mondaine, mondial, mondo, mundane, mundanity, ultramundane
mur- wall Latin mūrus, muri antemural, immuration, immure, immurement, intramural, murage, mural
mus- mouse Greek μῦς, μυός (mûs, muós) musophobia
mus- thief Latin mus, muris mouse
musc- fly Latin musca, muscae Musca, muscarine, Muscicapa, Muscicapidae, Muscidae, musciform, mosquito
mut- change Latin mūtare immutable, mutation, permutation, transmute
my- shut (the eyes) Greek μύειν (múein), μύσις (músis) miosis, myopia, myopic, myosis, mystery
mycet- fungus Greek μύκης, μύκητος (múkēs, múkētos) ascomycete, basidiomycete, mycology, Mycoplasma, zygomycete, zygomycosis
mydr- dilate Greek μύδρος, μυδρίασις (mudríasis) mydriasis
myl- mill Greek μύλη (múlē), μύλος (múlos) amyloid, amyloidosis, amylolysis, amylopectin, amylophagia, amyloplast, amylose, amylum
myri- countless, ten thousand Greek μυρίος (muríos) myriad, myriagon, myriagram, myriapod, myriapodology
myrmec- ant Greek μύρμηξ (múrmēks) myrmecochory, myrmecoid, myrmecology, myrmecophobia, Myrmidons, myrmomancy
mys- uncleanness Greek μύσος (músos) mysophobia
myth- story Greek μῦθος (mûthos) mythic, mythology, mythomania, mythopoeia, mythos
myx- slime Greek μύσσομαι, μύξα (múksa) match, myxedema, myxoedema, Myxini, myxogastrid
myz- suck Greek μυζάω (muzáō), μύζησις (múzēsis) Myzopoda
nar- nostril Latin naris naris
narc- numb Greek ναρκᾶν (narkân), νάρκη (nárkē) narcolepsy, narcosis, narcotic
narr- tell Latin narrare narrative
nas- nose Latin nasus nasal
nasc-, nat- born Latin nascere, nasci (past participle natus) innate, nascent, natal, native, renaissance
naut- ship Greek ναῦς (naûs), ναύτης (naútēs) aeronautic, Argonaut, astronaut, nausea, nautical, nautilus
nav- ship Latin navis naval
ne- spin, thread Greek νεῖν (neîn), νῆσις "spinning", νῆμα, νήματος (nēma, nḗmatos) axoneme, diplonema, leptonema, nematocyst, nematocyte, nematode, nematology, pachynema, synnema, treponema, zygonema
ne-, neo- new Greek νέϝος, νέος (néos) Neolithic, neologism, neon, neonate, neophyte
neb-, nub- cloud Latin nebula, nubes nebula, nebulosity, nebulous, nuance, nubilous, obnubilate
necr- dead Greek νεκρός (nekrós), νέκρωσις (nékrōsis) necromancy, Necronomicon, necrophilia, necrophobia, necropolis, necropsy, necrosis, necrospermia, necrotic, necrotize, necrotomy
nect- swimming Greek νηκτός (nēktós) nectopod, nekton
nect-, nex- join, tie Latin nectere, nexus connect, nexus
neg- say no Latin negare negative, renegade, renege
nemat- hair Greek νῆμα, νήματος (nêma, nḗmatos) nematocyst, nematocyte, nematode, nematology
nemor- grove, woods Latin nemus, nemoris nemoral
nephr- kidney Greek νεφρός (nephrós) mesonephros, metanephros, nephrite, nephritis, nephrogenesis, nephrolith, nephrolithiasis, nephrologist, nephrology, nephroptosis, pronephros
nerv- sinew, nerve Latin nervus enervate, innervate, nerve, nervous
nes- island Greek νῆσος (nêsos) Chersonesus, Indonesia, Micronesia, Peloponnese, Polynesia
neur- nerve, sinew Greek νεῦρον (neûron) aponeurosis, endoneurium, epineurium, neural, neurapraxia, neurasthenia, neuritis, neuroblast, neuroblastoma, neurocranium, neurocyte, neuroendocrine, neuroendocrinology, neurologic, neurologist, neurology, neuromorphology, neuron, neurone, neuropathic, neuropathology, neuropathy, neuroplastic, neurosis, neurosurgeon, neurosurgery, neurotic, neuroticism, perineurium, polyneuropathy
nict- beckon, wink Latin nictari nictation
nigr- black Latin niger denigrate
nihil- nothing Latin nihilum annihilation, nihilism
noc- hurt, harm Latin nocere innocent, innocuous, nociception, nociceptive, nocuous, nuisance
noct- night Latin nox (genitive noctis) equinox, noctambulist, noctilucent, nocturnal
nod- knot Latin nodus denouement, node, nodule
nom- arrangement, law, order Greek νόμος (nómos), νομή agronomy, astronomy, autonomous, autonomy, bionomics, economics, economy, gastronomy, metronome, numismatic, polynomial, taxonomy
nomad- those who let pasture herds Greek νομάς, νομάδος (nomás, nomádos), νομαδικός (nomadikós) nomad, nomadic, nomadism, nomadize
nomen-, nomin- name Latin nomen, nominis nomenclature, nominate, nomination, ignominious, ignominy
non- not Latin non none, nonexistent, non-fiction, noninvasive
non- ninth Latin nonus nonagon, nonary
nonagen- ninety each Latin nonageni nonagenary
nonagesim- ninetieth Latin nonagesimus nonagesimal
not- south Greek νότος (nótos) Notogaea, Notomys, Nototherium
not- back Greek νῶτον (nôton), νῶτος, νωτιαῖος notochord
not- letter, note, paper Latin notare annotation, connotation, connote, denotation, denote, notable, notary, notate, notation
noth- spurious Greek νόθος (nóthos) nothogenus
nov- nine Latin novem November, novennial
nov- new Latin novus innovate, innovation, nova, novel, novice, renovate
noven- nine each Latin noveni novenary
novendec- nineteen Latin novendecim novemdecillion
nox-, noc- harmful Latin noxa noxious, obnoxious
nu- nod Latin nuere innuendo
nub-, nupt- to marry, to wed Latin nubes, nubis, nubere connubial, nubile, prenuptial
nuc- nut Latin nux, nucis nuclear, nucleus
nuch- back of neck Latin nucha nuchal cord
nud- naked Latin nudus denude, nudist, nudity
null- none Latin nullus nullify
numer- number Latin numerus enumerate, innumerable, numeral, numeration
nunci- announce Latin nuntius pronunciation
nutri- nourish Latin nutrire malnutrition, nutrient
nyct- night Greek νύξ, νυκτός (núks, nuktós) nyctalgia, nyctanthous, nyctinasty, nyctophilia, nyctophobia
ob-, o-, oc-, of-, og-, op-, os- against Latin ob obduracy, obdurate, obduration, obfuscate, oblique, obliquity, obstinate, obstreperous, occur, offend, omit, oppose, ostensible, ostentatious
obel- spit, nail Greek ὀβελός (obelós), ὀβελίσκος (obelískos) metobelus, obelisk, obelism, obelus
Greek ὀβολός, ὀβολοῦ (obolós, oboloû) obol, obolus
Greek ὠκεανός (ōkeanós) Oceania, oceanic
ochl- crowd, mob Greek ὄχλος, ὄχλου (ókhlos, ókhlou) enochlophobia, ochlocracy, ochlophobia
oct- eight Greek ὀκτώ (oktṓ), ὀκτάς (oktás), ὀκτάκις (oktákis) "eight times" hemi-octahedron, octad, octadic, octagon, octahedron, octameter, octode
oct- eight Latin octō octangular, octennial, octovir
octav- eighth Latin octāvus octaval
octogen- eighty each Latin octogeni octogenarian, octogenary
octogesim- eightieth Latin octogesimus octogesimal
octon- eight each Latin octoni octonary
ocul- eye Latin oculus, oculare ocular, oculus, ullage
od- path, way Greek ὁδός (hodós) anode, diode, odometer, parodos, pentode, tetrode, triode
odi- hate Latin odium odious
odont- tooth Greek ὀδούς, ὀδόντος (odoús, odóntos) anodontia, conodont, cynodont, dicynodont, dysodontiasis, macrodontia, mastodon, odontoid, odontology, odontophore, orthodontics, orthodontist, pedodontics, periodontal, smilodon, Thrinaxodon, Zanclodon
odor- fragrant Latin odor malodorous, odoriferous, odorous
odyn- pain Greek ὀδύνη (odúnē) allodynia, anodyne, glossodynia, mastodynia, pleurodynia
oec- house Greek ϝοῖκος (woîkos), οἶκος (oîkos) andromonecy, archdiocese, dioecious, dioecy, ecesis, ecology, economize, gynomonoecy, heteroecious, monoecy, oecology, oeconomus, oikology, oikophobia, palaeoecology, paleoecology, parish, paroecious, perioeci, trioecious
oed-, ed- swell, swollen Greek οἶδος (oîdos), οἰδεῖν (oideîn), οἴδημα, οἴδηματος (oídēma, oídēmatos) angioedema, edema, edematous, oedema, oedematous
oen- wine Greek ϝοῖνος (woînos), οἶνος (oînos) enology, oenochoe, oenologist, oenology, oenophile, oenophilia, oinochoe
oesophag- gullet Greek οἰσοφάγος (oisophágos) oesophagectomy, oesophagitis, oesophagus
oestr- gadfly, sting Greek οἶστρος (oîstros), οἰστράω, οἴστρησις, οἴστρημα anestrous, anestrus, anoestrus, estrogen, estrogenic, estrus, oestrone, oestrus
ogdo- eighth Greek ὄγδοος (ógdoos), ὀγδοάς, ὀγδοάδος (ogdoás, ogdoádos) ogdoad
-oid like Greek -οειδής (-oeidēs) asteroid, mucoid, organoid
ole- oil Latin oleum oleosity
olecran- skull of elbow Latin from Greek ὠλέκρανον (ōlékranon) olecranon
olig- few Greek ὀλίγος (olígos) oligarchy, Oligocene, oligopoly, oligosaccharide, oligotrohic
oliv- olive Latin oliva olivaceous, olivary, olivette
om- raw Greek ὠμός (ōmós), ὠμότης (ōmótēs) "rawness" omophagia, Omophagus
om- shoulder Greek ὦμος (ômos), ὠμία (ōmía) acromion, omohyoid, omophorion
-oma morbid growth, tumor Greek -ωμα melanoma
omas- paunch Latin omasum abomasum, omasum
ombr- rain Greek ὄμβρος (ómbros) ombrogenous, ombrology, ombrometer, Ombrophila, ombrophilous, ombrophobe, ombrotrophic
oment- fat skin Latin omentum omental
omin- creepy Latin omen, ominis abominable, ominous
ommat- eye Greek ὁράω, ὦμμαι, ὄμμα, ὄμματος (ómma, ómmatos) ommatidium, ommatophore
omni- all Latin omnis omnipotence, omnipresent, omniscient, omnivore
omphal- navel Greek ὀμφαλός (omphalós) omphalectomy, omphalic, omphalopagus, omphalophobia
on- ass Greek ὄνος (ónos), ὀνίσκος (onískos) Oniscidea, Oniscomorpha
onc- barb, hook Greek ὄγκος, ὄγκινος (ónkinos) Oncinocalyx, Oncorhynchus
onc- bulk Greek ἐνεγκεῖν, ὄγκος (ónkos), ὀγκόω, ὀγκωτός, ὄγκωσις, ὄγκωμα oncocyte, oncocytoma, oncogenesis, oncologist, oncology
oneir- dream Greek ὄνειρος (óneiros), ὀνειρώσσω, ὀνείρωξις (oneírōksis) oneiric, oneirism, oneirocritic, Oneirocritica, Oneirodidae, oneirogen, oneirogenic, Oneiroi, oneiroid, oneirology, oneiromancy, oneironaut, oneironautics, oneirophobia, oneirophrenia, oneiroscopy
oner- burden Latin onus, oneris exonerate, onerous
oni- price Greek ὦνος (ônos), ὤνιος (ṓnios) oniochalasia, oniomania, oniomaniac
onomat- name Greek όνομα, ὀνόματος (ónoma, onómatos), ὀνομάζω, ὀνομαστικός (onomastikós) antonomasia, onomasiology, onomastic, onomasticon, onomastics, onomasty, onomatology, onomatophore, onomatopoeia
ont- being, existence Greek ὄντος, ὀντότης (óntos, ontótēs), οὐσία (ousía) dysontogenesis, homoiousia, homoousia, monoousious, ontogenesis, ontogenetic, ontogeny, ontology, ousia, parousia
onych- claw Greek ὄνυξ, ὄνυχος (ónuks, ónukhos), ὀνύχιον (onúkhion), ὀνύχινος, ὀνυχίζω hapalonychia, Mesonychia, mesonychid, onychectomy, onyx, sardonyx
-onym name Greek ὄνυμα (ónuma) anonymous, antonym, allonym, cryptonym, eponymy, euonym, homonym, metonymy, pseudonym, synonym
oo- egg Greek ᾠόν (ōión) dioon, oidioid, oidium, ooblast, oocyst, oocyte, oocytogenesis, oogamete, oogamous, oogamy, oogenesis, oogonium, ooid, oolite, oolith, oology, oophagy, oophorectomy, ootheca, ootid, ootidogenesis
op- hole Greek ὀπή (opḗ), ὀπαῖον (opaîon) metope, opaion
opac- shady Latin opacus opacity
oper- work Latin opus, operis cooperate, inoperable, opera, operate, opus
oper- cover Latin operire, operculum codiscovery, cover, covert, coverture, curch, curfew, discover, discoverable, discovert, discoverture, discovery, interoperculum, kerchief, nondiscoverable, opercular, operculiform, operculum, re-cover, rediscover, subcover
ophi- snake Greek ὄφις, ὄφεως (óphis, ópheōs) Brachyurophis, ophicephalous, Ophicephalus, Ophiceras, Ophiclinus, ophidiophobia, ophiolite, ophiologist, ophiology, ophiophagous, Ophiophagus, ophiophagy, ophiophobia, Ophisaurus, Ophisops, ophitic
ophthalm- eye Greek ὀφθαλμός (ophthalmós) exophthalmic, exophthalmos, microphthalmia, ophthalmia, ophthalmic, ophthalmologic, ophthalmologist, ophthalmology, ophthalmoparesis, ophthalmoplegia, parophthalmia, xerophthalmia
opisth- behind Greek ὄπισθεν (ópisthen), ὀπίσθιος anopisthograph, opisthion, opisthobranch, opisthodomos, opisthoglyphous, opisthognathous, opisthograph, opisthokont, opisthosoma, opsimath, opsimathy
ops-, opt- eye Greek ὄψεσθαι (ópsesthai), ὀπτός (optós), ὀπτικός (optikós), ὄψις (ópsis) amblyopia, anopia, autopsy, biopsy, catadioptrics, catoptrics, catoptromancy, catoptrophobia, cyclops, diopter/dioptre, dioptrics, diplopia, eisoptrophobia, emmetropia, hemianopsia, myopia, opsoclonus, optic, optokinetic, panopticon, pleoptics, synopsis, synoptic, tritanopia
opsi- late Greek ὀψέ (opsé), ὄψιος opsimath
opson- cook, prepare for eating Greek ὀψωνεῖν (opsōneîn), (opsōnia) opsonin, opsonoid
opt- choose Latin optare adopt, adoptee, adoption, adoptive, co-option, coopt, cooptation, nonoptional, opt, optation, optative, option, optional, optionality
optim- best Latin optimus optimal, optimum
or- mountain Greek ὄρος, ὄρεος (óros, óreos), ὀρειάς Oread, orogenesis, orogenic, orogeny, orographic, orography
or- mouth Latin os (genitive oris) "mouth" adosculation, inosculate, inosculation, interosculate, intraoral, oral, orifice, osculant, osculum, peroral
ora- pray, plead Latin orare "to pray, plead" adore, adoration, exorable, inexorable, oracle, orate, oration, orator, oratorio, oratory, orison, perorate, peroration, perorator
orb- circle Latin orbis orbit
orch- testicle Greek ὄρχις (órkhis), ὀρχίδιον (orkhídion) anorchia, cryptorchidism, monorchism, orchid, orchiectomy, orchiopexy, Orchis, polyorchidism
orches- dance Greek ὀρχεῖσθαι (orkheîsthai) orchestra
ordin- order Latin ōrdō, ordinis coordinal, coordinate, coordination, coordinator, disorder, extraordinaire, extraordinary, grandorder, incoordinate, incoordination, infraorder, inordinate, inordination, insubordinate, insubordination, magnorder, mirorder, ordain, ordainment, order, ordinal, ordinance, ordinand, ordinariate, ordinary, ordinate, ordination, ordinative, ordnance, ornery, parvorder, preordain, preorder, preordination, quasiorder, reordain, reorder, reordination, suborder, subordinary, subordinate, subordination, superordain, superorder, superordinate, superordination
oreg- reach Greek ὀρέγειν (orégein), ὀρεκτός (orektós), ὀρεκτικός (orektikós), ὄρεξις (óreksis), ὄρεγμα (óregma) anorectic, anorexia, dysorexia, orectic, orexin, parorexia
org- work Greek ὄργια (órgia) Orgasm
organ- organ, instrument, tool Greek ὄργανον (órganon) organic, organism, organogenesis
ori-, ort- eastern Latin oriri, ortus aboriginal, abort, abortifacient, abortion, abortive, disorient, disorientation, orient, oriental, Orientalia, orientate, orientation, orientational, orientative, origin, original, originality, originate, origination, originator, reorient, reorientation
orn- decorate Latin ōrnāre adorn, adornment, ornament, ornamental, ornamentation, ornate, ornative, ornature, suborn, subornation
ornith- bird Greek ὄρνις, ὄρνιθος (órnis, órnithos) Avernus, ornithology, ornithomancy, ornithorhynchus, ornithosis
Greek ὀρφανός (orphanós), ὀρφανότης orphan
orth- straight Greek ὀρθός (orthós), ὀρθότης orthocenter, orthocentric, orthodontia, orthodontic, orthodontist, orthodox, orthodoxy, orthographic, ortholog, orthologous, orthonym, orthopedic, orthoscope, orthosis, orthostat, orthostyle, orthotic
oryz- rice Greek ὄρυζα (óruza), ὀρύζιον Oryza, Oryzomys, rice, risotto
oscill- swing Latin oscillum oscillation, oscillator, oscillatory
osm- odor Greek ὀσμή (osmḗ), ὄσμησις anosmia, anosmic, cacosmia, coprosmia, dysosmia, dysosmic, euosmia, hyperosmia, hyperosmic, hyposmia, hyposmic, osmium, osmolagnia, osmophobia, osphresiolagnia, parosmia, phantosmia, troposmia
osm- push, thrust Greek ὠσμός (ōsmós) osmometry, osmosis, osmostat, osmotic
oss- bone Latin os, ossis exossation, interosseous, ossature, osselet, osseocartilaginous, osseointegration, osseous, ossicle, ossicular, ossiferous, ossification, ossifrage, ossify, ossuary
oste- bone Greek ὀστέον, ὀστέου (ostéon, ostéou), ὀστοῦν, ὀστοῦ (ostoûn, ostoû) dysostosis, endosteum, exostosis, hyperostosis, monostotic, Osteichthyes, osteoarthritis, osteoblast, osteochondritis, osteochondrosis, osteoclast, osteogenic, osteogenesis, osteoid, osteology, osteolysis, osteoma, osteomalacia, osteonecrosis, osteopathy, osteopenia, osteoporosis, osteosarcoma, osteosis, osteothrombosis, osteotome, osteotomy, periosteum, synostosis
osti- entrance Latin ostium ostiary, ostiolar, ostiole, ostium
ostrac- shell Greek ὄστρειον (óstreion), ὀστρακίζω (ostrakízō), ὄστρακον (óstrakon) Entomostraca, Leptostraca, Malacostraca, ostracism, ostracize, ostracod, ostracoderm, ostracon, periostracum
ostre- oyster Greek ὄστρεον ostreophagist, oyster
ot- ear Greek οὖς, ὠτός (oûs, ōtós) anotia, Aotus, microtia, Myosotis, otalgia, otic, otitis, otocephaly, otocleisis, otoconium, otocyst, otodynia, otolith, otology, otopathy, otophyma, otoplasty, otorhinology, otorrhea, otosclerosis, otoscope, otoscopy, ototomy, parotic, parotid, periotic, synotia
ov- egg Latin ovum obovate, oval, ovarian, ovariole, ovary, ovate, ovicapsule, ovicidal, ovicide, oviduct, oviferous, oviform, oviposition, ovipositor, ovolo, ovular, ovulation, ovulatory, ovule, ovum, pluriovulate
ovi- sheep Latin ovis ovile, ovine
oxy- sharp, pointed Greek ὀξύς (oksús) anoxia, anoxic, dioxide, hypoxia, monoxide, oxide, oxyanion, oxygen, oxyhalide, oxymoron, oxyntic, oxytone, paroxysm, pentoxide, polyoxide, tetraoxygen, tetroxide, trioxide
oz- smell Greek ὄζειν (ózein), ὄζων (ózōn), ὄζη ozocerite, ozone, ozopore
pac- peace Latin pax, pacis appease, Pacific, pacifism, pacifist, pacify
pach- thick Greek παχύς (pakhús), πάχος, πάχεος (pákhos, pákheos) pachydermata, pachyglossia, pachynsis, Pachypodium
pact- fasten Latin pangere "to fix, fasten" compact, impact, impaction, impinge, pact, page, propagate
pae- strike Greek παίειν (paíein), (paistos) anapaest, anapaestic, anapest, anapestic
paed-, ped- child Greek παῖς, παιδός (paîs, paidós), παιδικός (paidikós) orthopedic, paediatric, paedogenesis, paedomorphism, page, pedagogue, pedagogy, pedant, pedantic, pediatric, pedodontics, pedophilia
pagin- page Latin pagina pagination
pal- stake Latin palus impale, impalement, pale, palisade, pole, travail, travel
palae-, pale- ancient, old Greek παλαιός (palaiós) Paleo Diet, paleobiology, paleobotanic, Paleocene, Paleogene, Paleolithic, paleology, paleomagnetism, paleontology, paleopolyploidy, paleopsychology, Paleozoic
palin-, palim- back Greek πάλιν (pálin) palimpsest, palindrome, palingenesis, palinspastic
pall- be pale Latin pallere pallid, pallor
palli- cloak Latin palliare "to cover, cloak", from pallium "cloak" pall, palliate, palliative, pallium
palm- palm Latin palma palmate
palp- touch Latin palpare palp, palpable, palpate, palpation, palpitant, palpitation
palustr- in marshes Latin paluster palustral
pan- Pan Greek πάειν, Πάν (Pán), Πανικός (Panikós) panic
pan-, pam- all Greek πᾶς, παντός (pantós), πᾶν (pân), πασῶν, παντότης, πάντοθεν diapason, panacea, pandemic, pandemonium, panoply, panoptic, pantology, parrhesia
pan- bread Latin pānis accompaniment, accompany, appanage, companion, company, empanada, impanate, impanation, panelle, panetela, panetella, panettone, panivorous, pannier, pantry
pand-, pans- spread Latin pandere, pansus/passus compass, dispand, dispansion, encompass, encompassment, expand, expanse, expansion, expansive, expansivity, impassable, impasse, pace, pandiculate, pandiculation, passus, repand, spawn, subrepand
par-, para- beside, near Greek παρά (pará) parable, parabola, parallel, parallelepiped, parameter, parapagus
par- equal Latin par compare, disparage, par, parity, peer, subpar
par- order, prepare, provide, procure Latin parare apparat, apparatus, co-emperor, comprador, disparate, disrepair, dissever, disseverance, emperor, empery, empire, empress, imperant, imperative, imperator, imperious, inseparable, irreparable, parade, pare, parison, parry, parure, preparation, preparative, preparatory, prepare, repair, reparable, reparation, reparative, separability, separable, separate, separation, separative, separator, separatory, separatrix, sever, severability, severable, several, severance, vituperate
par-, para- beside, near Greek παρά (pará) parable, paradox, parallel, parameter, parody
parc-, pars- spare, save Latin parcere, parsus parcity, parsimonious, parsimony
pariet- wall Latin paries, parietis parietal
part- part Latin pars, partis apart, bipartite, compartment, depart, impartial, parcel, part, partial, participate, particle, partisan, partition
parthen- virgin Greek παρθένος (parthénos) parthenocarpy, parthenogenesis, Parthenon, Parthenope
parv- little Latin parvus parvovirus
pasc-, past- feed Latin pāscere, pāstus antepast, antipasto, pabulum, pastel, pastern, pastiglia, pastille, pastor, pastorage, pastoral, pastorale, pastorate, pastorium, pasturable, pasturage, pastural, pasture, repast, repasture
pass- sprinkle Greek πάσσειν (pássein), παστός (pastós) paste
pass- pace, step Latin passus
passer- sparrow Latin passer passeriform, passerine
pat- path Greek πάτος (pátos), πατεῖν (pateîn), πατητός, πατητής, πατητήριον peripatetic, peripateticism
pat- be open Latin patere impatent, patefaction, patella, patellar, patelliform, paten, patency, patent, patera, patin
path- feeling, disease Greek πάσχειν (páskhein), παθητικός (pathētikós), πάθος (páthos) allopath, allopathy, antipathy, apathetic, apathy, empathy, etiopathogenesis, homeopathic, homeopathy, idiopathic, pathetic, pathoclisis, pathogen, pathogenesis, pathogenic, pathologist, pathology, pathos, psychopath, psychopathic, psychopathy, sympathectomy, sympathetic, sympathy
pater-, patr- father Greek πατήρ, πατρός (patḗr, patrós), πατριά (patriá), πατριώτης (patriṓtēs) allopatric, allopatry, eupatrides, patriarch, patriarchy, patriot, patriotic, patriotism, patrology, patronym, patronymic, sympatric, sympatry
pater-, patr- father Latin pater (genitive patris) compadre, compaternity, compère, impetrate, impetration, impetrative, impetrator, Jupiter, padre, padrone, paterfamilias, paternal, paternity, paternoster, patriate, patriation, Patricia, patrician, patriciate, patricidal, patricide, Patrick, patriclinous, patricliny, patrifocal, patrilateral, patrilineage, patrilineal, patrilineality, patrilinear, patrilocal, patrilocality, patrimonial, patrimony, patron, patronage, patronal, patronate, patroness, patroon, patter, pattern, père, perpetrable, perpetrate, perpetration, perpetrator, repatriate, repatriation
pati-, pass- suffer, feel, endure, permit Latin pati, passus compassion, compassionate, compatibility, compatible, dispassion, dispassionate, impassible, impassion, impassive, impassivity, impatible, impatience, impatient, incompatibility, incompatible, interpatient, noncompatible, nonpassible, passibility, passible, passion, passional, passionary, passionate, passive, passivity, patible, patience, patient, patientive, perpession
pauc- few Latin paucus paucal, pauciloquent, paucity
pav- beat Latin pavire pavage, pave, pavement, pavior
pecc- sin Latin peccatum "sin, fault, error", from peccare "to miss, mistake" impeccable, peccadillo, peccant, peccavi
pect- fixed Greek πηκτός (pēktós) pectic, pectin
pector- chest Latin pectus, pectoris pectoral
pecu- property Latin pecunia "property", from pecu "cattle" peculiar, pecuniary, pecunious
ped- foot Latin pes, pedis biped, bipedal, centipedal, centipede, decempedal, expediency, expedient, expeditate, expedite, expedition, expeditionary, expeditious, impeach, impeachable, impeachment, impede, impediment, impedition, impeditive, inexpedient, interpetiolar, intrapetiolar, millipede, multiped, multipede, octopede, oppidum, pawn, pedal, pedate, pedatifid, pedestal, pedestrian, pedicel, pedicle, pedicure, pediform, pedigerous, pedigree, peduncle, pedunculate, peon, peonage, petiolar, petiolate, petiole, petiolular, petiolulate, petiolule, piedfort, piedmont, pioneer, quadruped, quadrupedal, repedation, revamp, semiped, semipedal, sesquipedal, stapes, stapedius, subpetiolate, suppedaneum, tripedal, trivet, vamp, velocipede
peg-, pect- fix Greek πηγνύναι (pēgnúnai), πηκτός (pēktós), πηκτικός (pēktikós), πῆξις (pêksis), πῆγμα (pêgma), πάγη (págē), πάγος (págos), πάγιος (págios), παγιότης (pagiótēs), πάσσαλος (pássalos) hysteropexy, pagophobia, parapagus, pectic, pectin, rheopectic, rheopecty, rheopexy
pejor- worse Latin pejor pejorative
pel- clay, mud Greek πηλός (pēlós) pelite, pelitic
pelag- sea Greek πέλαγος (pélagos), πελαγικός (pelagikós) abyssopelagic, allopelagic, archipelago, bathypelagic, epipelagic, hadopelagic, mesopelagic, pelagic
pelarg- stork Greek πελαργός (pelargós), πελαργώδης pelargonic, Pelargonium
pell-, puls- drive, push Latin pellere, pulsus appulse, compel, compulsory, dispel, expel, expulsion, impel, impulse, propel, propellent, propulsion, propulsive, propulsor, pulsate, pulse, push, repel, repellent, repulsive
pemp-, pomp- send Greek πέμπειν (pémpein), πομπή (pompḗ) apopemptic, hypnopompic, pomp, psychopomp
pen- almost Latin paene peninsula, penultimate, penumbra
pen-, poen-, puni- punish Latin punire "punish" (earlier poenire), from poena "punishment" impune, impunity, pain, penal, penalize, penalty, penance, penitence, penitent, penitentiary, pine, punish, punitive, repent, subpoena
pend-, pens- hang Latin pensare, frequentative of pendere append, penchant, pendant, pending, pendulum, pensive, prepense, suspend, suspense
penia- deficiency Greek πενία (penía) leukopenia
penn-, pinn- feather Latin penna, pinna pennate, pinnacle, pinnate, pinnule
pent- five Greek πέντε (pénte), πεντάς, πεντάδος (pentás, pentádos), πεντάκις (pentákis) "five times", πενταπλάσιος (pentaplásios) "five-fold", πενταχοῦ diapente, pentachoric, pentad, pentagon, pentagram, pentalpha, pentapolis, pentatonic, pentatope, pentode
pentacosi- five hundred Greek πεντακόσιοι (pentakósioi) pentacosiomedimni
pentecont- fifty Greek πεντήκοντα (pentḗkonta), πεντηκοντάς, πεντηκοντάδος (pentēkontás, pentēkontádos) pentecontad, pentecontagon
pentecost- fiftieth Greek πεντηκοστός (pentēkostós) Pentecost, pentecostalism
peper- pepper Greek πέπερι, πεπέρεως paprika, pepper
pepon- ripe Greek πέπων, πέπονος (pépōn, péponos) pumpkin
pept- digest Greek πέσσειν (péssein), πεπτός (peptós), πεπτικός (peptikós), πέψις (pépsis) dipeptide, dyspepsia, dyspeptic, eupepsia, eupeptic, monopeptide, oligopeptide, pentapeptide, pepsin, peptic, peptide, peptone, polypeptide, tetrapeptide, tripeptide
per- wallet Greek πήρα (pḗra), πηρίδιον (pērídion) peridium
per-, pel- thoroughly, through Latin per pellucid, perfection, permeate, pernicious, persistence, peruse, pervade
peran- across, beyond Greek πέραν (péran) Perates
perdic- partridge Greek πέρδιξ, πέρδικος (pérdiks, pérdikos) Melanoperdix, partridge
peri- around Greek περί (perí) Pericles, pericope, perigee, perihelion, perimeter, period, periphery, periscope
persic- peach Greek περσικός (persikós)
pessim- worst Latin pessimus pessimal
pet- strive toward Latin petere appetite, compete, competition, impetus, petition, petulant, propitiate, repeat, repetition
petr- rock Greek πέτρα (pétra) epipetric, petroglyph, petrographic, petrography, petrology, petrosomatoglyph
phae-, phe- dark Greek φαιός (phaiós) phaeohyphomycosis, phaeomelanin, pheochrome, pheochromocytoma
phag- eat Greek φαγεῖν (phageîn), φαγία (phagía) autophagosome, autophagy, bacteriophage, dysphagia, esophagitis, geophagia, hematophagy, macrophage, odynophagia, phagocyte, phagocytosis, phagolysosome, phagophilia, phagophobia, phagosome, phagy, polyphagia, pseudodysphagia, sarcophagus
phalang- close formation of troops, finger bones Greek φάλαγξ, φάλαγγος (phálangos) aphalangia, phalanges, phalanx
phalar- having a patch of white Greek φάλαρος (phálaros) phalarope
pharmac- drug, medicine Greek φάρμακον (phármakon) alexipharmic, pharmaceutics, pharmacodynamics, pharmacogenetics, pharmacogenomic, pharmacokinetics, pharmacology, pharmacophobia, pharmacy
phan-, phen- to show, visible Greek φαίνειν (phaínein), φαντός (phantós), φαινόμενον (phainómenon), φάσις (phásis) diaphanous, emphasis, epiphany, fantasy, phanerozoic, phantasm, phantom, phase, phene, phenetic, phenology, phenomenon, phenotype, photic, prophase, sycophant, telophase, theophany, tryptophan
pheb-, phob- fear Greek φέβεσθαι (phébesthai), φόβος (phóbos), φοβέω autophobia, hydrophobia, panphobia, phobophobia
pher-, phor- bear, carry Greek φέρειν (phérein), φορά (phorá), φόρος (phóros) adiaphora, adiaphorism, anaphor, metaphor, pheromone, phoresis, phoresy, phosphor, prosphora, pyrophoric
pheug-, phyg- flee Greek φεύγειν (pheúgein), φυγή, φυγάς, φυγάδος (phugás, phugádos) "fugitive", φυγαδικός apophyge, hypophyge
phil-, -phile love, friendship Greek φίλος (phílos), φιλικός (philikós), φιλεῖν (phileîn), φιλία (philía), φίλτρον (phíltron) bibliophile, heterophil, hydrophile, paraphilia, philanthropy, philharmonic, philophobia, philosophy, philter, philtre, philtrum
phim- muzzle Greek φῑμός (phīmós), φιμοῦν (phimoûn), φιμωτικός, φίμωσις (phímōsis) paraphimosis, phimosis, phimotic
phleb- vein Greek φλέψ, φλεβός (phléps, phlebós), φλέβιον phlebitis, phlebography, phlebosclerosis, phlebotomist, phlebotomize, phlebotomy, thrombophlebitis
phleg-, phlog- burn, heat, inflammation Greek φλέγειν (phlégein), φλέγμα (phlégma), φλόξ (phlóks) "flame" phlegm, phlegmasia, phlegmatic, phlegmon, phlegmonous, phlogistic, phlogiston, Phlox
phloe- tree bark Greek φλοιός (phloiós) hypophloeodic, phlobaphene, phloem, phloeophagy
phob- fear Greek φόβος (phóbos) acrophobia, arachnophobia, claustrophobia, ergophobia, homophobia, hydrophobia, zeusophobia
phon- sound Greek φωνή (phōnḗ), φωνητικός (phōnētikós), φώνημα (phṓnēma) acrophonic, acrophony, allophone, antiphon, antiphony, aphonia, aphonic, apophony, archiphoneme, cacophony, diaphony, diplophonia, dysphonia, euphonic, euphonious, euphonize, euphony, heterophonic, heterophony, homophone, homophonous, homophony, hypophonesis, ideophone, idiophone, isophone, logophonetic, megaphone, microphone, misophonia, monophonic, monophony, morphophonology, phonaesthesia, phonaesthetics, phone, phonemic, phonesthemic, phonetic, phonetics, phonics, phonogram, phonograph, phonology, phonophobia, phonosemantics, phonotactics, polyphonic, polyphony, stereophonic, symphonic, symphony, telephonic, telephony
phos-, phot- light Greek φῶς, φωτός (phōtós) cataphote, phosphor, phosphorus, photic, photo, photoelectric, photogenic, photograph, photosynthesis, phototaxis, phototherapy, phototroph, telephoto
phrag- fence Greek φράσσειν (phrássein), φράξις (phráksis), φράγμα (phrágma) diaphragm
phren-, phron- mind Greek φρήν, φρενός (phrḗn, phrenós) euneirophrenia, euphrasy, Euphrosyne, frantic, frenetic, frenzy, oneirophrenia, phrenetic, -phrenia, phrenic, phrenitis, phrenology, phronema, phronesis, phronetic, schizophrenia, sophrosyne
phryn- toad, toad-like Greek φρύνη (phrúnē) Phrynobatrachus
phtheg- utter Greek φθέγγεσθαι (phthéngesthai), φθεγκτός, φθεγκτικός, φθέγξις, φθέγμα, φθέγματος (phthégma, phthégmatos), φθεγματικός, φθόγγος (phthóngos), φθογγή apophthegm, apophthegmatic, diphthong, diphthongize, monophthong, monophthongize
phyc- seaweed Greek φῦκος, φύκεος (phûkos, phúkeos) phycology, Phycomyces, schizophyceous
phyl- tribe Greek φύλον (phúlon) phylogenetics, phylum
phyll- leaf Greek φύλλον (phúllon) chlorophyll, phyllotaxis
phys- bladder Greek φῦσα (phûsa) physogastric, physostomous, Triplophysa
physi- nature Greek φύσις (phúsis) physics, physician
physalid- bladder Greek φυσαλ(λ)ίς (phusal(l)is) physalis
phyt- plant Greek φύειν (phúein), φυτόν (phutón) archaeophyte, autophyte, bryophyte, dermatophyte, neophyte, phytoplankton
pi- kind, devout, pity Latin pius expiate, impious, piety, pious, pity
pic- pitch Latin pix, picis piceous
piez- squeeze Greek πιέζειν (piézein), πιεστός (piestós), πίεσις, πίεσμα, πίεσματος, πιεστήρ isopiestic, piezochromism, piezoelectric, piezometer
pil- hair Latin pilus depilatory, epilator
pil- pillar, ball Latin pila pile, pill, pillar, pillory
pin- drink Greek πίνειν (pínein), πῶμα pinocytosis
pin- pine Latin pinus pineal gland
ping-, pict- paint Latin pingere, pictus depiction, picture, pigment
pingu- fat Latin pinguis Pinguicula, pinguitude
pir- try Greek πεῖρα, πείρας (peîra, peíras), πειρᾶν (peirân), πειρατής (peiratḗs), πειρατικός (peiratikós), (peirāteía), πειράζω, πείρασις, πειρασμός antipiracy, apeirogon, apeirohedron, piracy, pirate, piratic
pir- pear Latin pirus piriformis muscle
pisc- fish Latin piscis Pisces, piscivore
pis- pea Greek πίσος (písos) pisoid, pisolite
pithec- ape, monkey Greek πίθηκος (píthēkos) australopithecine, Australopithecus, caenopithecine
plac- plain, plate, tablet Greek πλάξ, πλακός (pláks, plakós) Aplacophora, placenta, placode
plac- calm Latin placare, placatus implacable, placable, placate, please, supple
plac-, plea- please Latin placēre, placitus complacent, complaisant, displease, placebo, placid, plea, please, pleasure
plag- oblique Greek πλάγος (plágos), πλάγιος (plágios), πλαγιότης plage, plagiocephaly, plagioclase, plagiotropic, playa
plan- wander Greek πλάνος, πλανάομαι, πλανᾶσθαι (planâsthai), (planáein), πλανητός (planētós), πλανήτης (planḗtēs) aplanetic, aplanogamete, aplanospore, exoplanet, planet, planetoid, planoblast, planogamete, planospore, protoplanet
plan- flat Latin plānus applanate, applanation, aquaplane, complanar, complanate, coplanar, coplanarity, deplanate, deplane, emplane, esplanade, explain, explanation, explanatory, peneplain, pianissimo, piano, pianoforte, plain, plaintext, plan, planar, planarian, planary, planate, planation, plane, planification, planiform, planish, planula, planular, planulate
plang-, planct- strike, beat; lament, mourn Latin plangere, planctus plangent
plas- mould Greek πλάσσειν (plássein), πλαστός (plastós), πλαστικός (plastikós), πλάσις (plásis), πλάσμα, πλάσματος (plásma, plásmatos), πλάθω (pláthō) plasma, plastic, plastique, plastochron, plastromancy, plastron, prosoplasia, protoplasm, pseudoplastic, symplast
plat- flat, broad Greek πλατύς (platús), πλατεῖα (plateîa) piazza, place, plaice, plateau, platitude, platyhelminth, platypus, Platyrrhini, platysma, Platyzoa, plaza
plaud-, -plod-, plaus-, -plos- approve, clap Latin plaudere, plausus applaud, applause, explode, explosion, implode, plaudits, plausible
ple- fill, full Greek πιμπλάναι (pimplánai), πλέως/πλέος, πλειότερος, πλειότης, πλήρης (plḗrēs), πληρόω, πλήρωσις (plḗrōsis), πλήρωμα (plḗrōma), πλήθειν (plḗthein), πλῆθος (plêthos), πληθύς, πληθύω, πληθύνω (plēthúnō), πληθυντικός, πληθώρα/πληθώρη (plēthṓra), πληθωρικός (plēthōrikós), πληθυσμός (plēthusmós) pleroma, plethodontid, plethora, plethoric, plethysm, plethysmograph, plethysmometry
ple- sail, swim Greek πλεῖν (pleîn), πλεῦσις (pleûsis), πλόος pleon, pleopod, pleuston
ple-, plet- fill Latin plere complement, complete, deplete, implement, replete, suppletion, supply
pleb- people Latin plebs, plebis plebeian, plebs
plec-, ploc- plait, interweave Greek πλέκειν (plékein), πλεκτός (plektós), πλεκτικός (plektikós), πλέξις (pléksis), πλέγμα (plégma), πλοκή (plokḗ), πλόκος plectics, plexogenic, ploce, symplectic, symplectomorphism, symploce
plect-, plex- plait Latin plectere, plexus perplex
pleg- strike Greek πλήσσειν (plḗssein), πληκτός (plēktós), πλήκτης, πληγή (plēgḗ), πλῆξις (plêksis), πλῆγμα, πλήκτης, πλῆκτρον apoplectic, apoplexy, cataplectic, cataplexy, hemiplegia, monoplegia, paraplegia, plectrum, pleximeter, tetraplegia
plen- full Latin plenus plenary, plenitude, plenty, replenish
plesi- near Greek πλησίος (plēsíos), πλησιότης (plēsiótēs) plesiosaur
pleur- rib, side Greek πλευρά (pleurá), πλευρόν (pleurón) metapleural, pleura, pleurisy, pleuritis, pleurodynia, pleuron
plic- fold Latin plicare, plicatus appliance, applicability, applicable, applicant, applicate, application, applicative, applicator, applicatory, appliqué, apply, centuplicate, centuplication, complicacy, complicant, complicate, complication, complice, complicity, conduplicate, conduplication, duplication, explicate, explicit, implicate, implicit, imply, ply, replicate, replication, replicative, replicator, reply, splay, subduplicate, supplicant, supplicate, supplication, triplicate, triplicity
plinth- brick Greek πλίνθος (plínthos) plinth, Plinthograptis
plor- cry out, complain Latin plorare deplorable, deploration, deplore, exploration, exploratory, explore, imploration, imploratory, implore
plu- rain Latin pluere, see also pluvia pluvial
plum- feather Latin pluma plumage, plumate
plumb- lead Latin plumbum plumber
plur-, plus- more Latin plus, pluris double, plural, pluralist, plus, quadruple, surplus, triple
plurim- most Latin plurimus plurimal
plut- wealth Greek πλοῦτος (ploûtos) ploutonion, plutarchy, plutocracy, plutocrat, plutolatry, plutomania, plutonomics, Plutus
pne- blow, breathe, lung Greek πνεῖν (pneîn), πνεῦμα (pneûma), πνεύμων (pneúmōn) anapnograph, anapnoic, apnea, apnoea, dyspnoea, pleuropneumonia, pneumatic, pneumatology, pneumonia, pneumonic, pneumotaxic
pnig-, pnict- choke Greek πνίγειν (pnígein), πνῖγος, πνῖγμα, πνιγμός, πνικτός, πνικτικός pnictide, pnictogen
po-, pin- drink Greek πίνειν (pínein), πόσις, πῶμα pinocytosis, pinosome, symposium
pod- foot Greek πούς, ποδός (podós), ποδικός (podikós), ποδία (podía), πόδιον (pódion), πέδον (pédon), πεδίον, πέζα amphipod, antipode, decapod, podiatry, podium, podomancy, podomere, podopaediatric, polyp, polyposis, sympodium, tetrapod, tripod
pogon- beard Greek πώγων, πώγωνος (pṓgōn, pṓgōnos), πωγωνίας (pōgōnías) pogonia, pogoniasis, pogonology, pogonophobia, pogonotrophy, Triplopogon
poie-, poe- make Greek ποιϝέω, ποιεῖν (poieîn), ποιητός (poiētós) "made", ποιητικός (poiētikós), ποίησις (poíēsis), ποίημα (poíēma), ποιητής (poiētḗs) "maker" allopoiesis, autopoiesis, onomatopoeia, piyyut, poem, poesy, poet, poetaster, poetic, poiesis
pol- pole Greek πόλος (pólos) dipole, polar
pole- sell Greek πωλεῖν (pōleîn), πώλησις, πώλης "seller" duopoly, monopolist, monopolize, monopoly, oligopolist, oligopoly
polem- war Greek πολεμεῖν (polemeîn), πόλεμος (pólemos), πολεμικός (polemikós) polemarch, polemic, polemology
poli- city Greek πόλις, πόλιος (pólis, pólios), πολίτης (polítēs), πολιτικός (politikós) acropolis, biopolitics, cosmopolis, cosmopolitan, Decapolis, ecumenopolis, eperopolis, geopolitics, heptapolis, hexapolis, megalopolis, metropolis, pentapolis, police, policy, polis, politeia, politics, polity, propolis, tetrapolis, Tripoli
poli- gray, grey Greek πολιός (poliós), πολιότης poliomyelitis, poliosis
poll- many Greek πολλός (pollós)
pollic- thumb Latin pollex, pollicis pollicate
pollin- fine flour Latin pollen, pollinis pollination
poly- many Greek πολύς (polús), πολλός (pollós), πολλότης (pollótēs), πολλάκις (pollákis) "many times", πολλαπλάσιος/πολυπλάσιος, πλείων (pleíōn) "more", πλεῖστος (pleîstos) "most", πολλοστός (pollostós) hoi polloi, pollakanth, polyadic, polyandry, polygamy, polygon, polyphase, polysaccharide, polytheistic
pomp- pomph- blister Greek πομφός (pomphós), πομφόλυξ podopompholyx, pompholyx
pon-, posit- put Latin ponere, positus apposite, apropos, component, depose, deposit, exponent, expose, expound, impose, impound, opponent, position, positive, postpone, posture, propone, proponent, proposition, propound, repose
ponder- weight Latin pondus, ponderis, ponderare ponder, preponderance
pont- bridge Latin pons, pontis pontoon
popul- people Latin populus, populare population, popular, populous
por- passage Greek πόρος (póros), πορεύω, πορίζειν (porízein), πόρισμα (pórisma) aporetic, aporia, emporium, gonopore, ozopore, polypore, pore, porism, porismatic
porc- pig Latin porcus porcine, pork
porn- prostitute Greek πόρνη (pórnē) pornographic, pornography
porphyr- purple Greek πορφύρα (porphúra) porphyrin, porphyritic, porphyrophobia, porphyry
port- carry Latin portare "to carry", porta "gate" comportment, deport, export, import, port, portable, portage, portal, porter, portfolio, purport, rapport, report, support, transport
portion- part, share Latin portio portion, proportion
post- after, behind Latin post posterior, posterity, postscript
pot- power Latin potere "be powerful", from potis "powerful, able" despot, impotent, possess, potent, potentate, potential, power
pot- drink Latin potus, potare potable, potion
potam- river Greek ποταμός (potamós) autopotamic, hippopotamus, Mesopotamia, potamic, potamodromous, potamology, potamophobia, potamoplankton
prag- do Greek πράσσειν (prássein), πράττειν (práttein), πρασσόμενον, πρακτός (praktós), πρακτικός (praktikós), (prāktikḗ), πρᾶξις (prâksis), πρᾶγμα (prâgma) apraxia, dyspraxia, parapraxis, practic, practice, pragma, pragmatic, pragmatism, pragmatist, praxis
pras- leek Greek πράσον (práson), πράσινος (prásinos) "leek-green", πρασιά chrysoprase, prasinous
prat- meadow Latin pratum
prav- crooked Latin pravus depravity
pre- before Latin prae previous
prec- pray Latin precāri "to ask, beg, pray", from prex "prayer" deprecation, imprecation, pray, prayer, precarious
pred- prey Latin praedari "plunder", from praeda "prey" depredate, predation, predator, predatory, prey
prehend-, prend-, prehens- grasp Latin prehendere, prehensus apprehend, comprehend, comprehensive, enterprise, prehensility, prehension, prey, prison, prize, reprehend, surprise
prem-, -prim-, press- press Latin premere, pressus pressure
presby- old Greek πρέσβυς (présbus), πρεσβύτερος (presbúteros), (presbutérion) archpriest, presbyter, Presbyterianism, presbyterium, presbytery, priest, protopresbyter
preter- past Latin praeter preterite, pretermission
preti- price Latin pretium, pretiare
pri- saw Greek πρίειν (príein), πρῖσις (prîsis), πρίων, πρίονος (príōn, príonos) prion
Greek πριάπος priapism, Priapus
prim- first Latin primus coprime, nonprime, prima facie, primacy, primal, primality, primary, primate, prime, primer, primeval, primine, primitive, primogeniture, primordial, primrose, Primula, semiprime, subprimal, subprime
prior- former Latin prior prior, priority, priory, pristine, repristinate, subprior
prism- to saw, something sawed Greek πρίσμα, πρίσματος (prísma, prísmatos), πρισμάτιον (prismátion) antiprism, prism, prismatic, prismatoid
priv- own Latin privus, privare, privatus deprivation, deprive, privacy, private, privateer, privation, privative, privilege, privity, privy, semiprivate
pro- before, in front of Greek πρό (pró), πρότερος (próteros) "former", πρῶτος (prôtos) prologue, prostate, prow
pro- for, forward Latin pro procrastinate, propel, propulsion
prob- worthy, good Latin probare "prove to be worthy", probus approbation, approve, disapprobation, opprobrium, probable, probation, probe, probity, proof, prove, reprobate, reprove
proct- anus Greek πρωκτός (prōktós) Ectoprocta, Entoprocta, epiproct, hypoproct, paraproct, periproct, proctalgia, proctology
prodig- waste Latin prodigus "wasteful", from prodigere "drive away, waste" prodigal, prodigality
prodig- prodigy Latin prodigium "prodigy" prodigious, prodigy
propri- property; one's own Latin proprietas "appropriateness, property, ownership", from proprius "one's own" appropriate, proper, property, proprietary, proprietor, propriety
pros- forth, forward Greek πρός (prós), πρόσθεν (prósthen), πρόσθιος (prósthios) prosenchyma, prosophobia, prosthesis, prosthion
prosop- face Greek πρόσωπον (prósōpon) aprosopia, diprosopus, prosopography, prosopopoeia, prosopospasm
prot- first Greek πρῶτος (prôtos) amphiprotic, antiproton, protagonist, protanomaly, protanopia, protein, protist, protocol, proton, protoplasm, prototype, Protozoa
proter- former Greek πρό (pró), πρότερος (próteros), προτερέω Proterozoic
proxim- nearest Latin proximus, proximare approximate, proximity
prun- plum Latin prunus prune
psa- rub Greek ψᾶν (psân), ψαφαρός, ψήχειν, (psēstós) palimpsest
psall- pluck Greek ψάλλειν (psállein), ψαλμός (psalmós) psalm, psalmodicon, psalmody, psalter, psaltery, psaltikon
psamath- sand Greek

psamm- sand Greek ψάμμος (psámmos), ψάμαθος (psámathos) psammite, psammitic, psammoma, psammophile, Psammophis, psammophyte, psammosere, psammous
pseph- pebble Greek ψάω, ψῆφος (psêphos), ψηφίζειν (psēphízein) isopsephy, psephite, psephitic, psephocracy, psephology
pseud- false Greek ψεύδω, ψεῦδος (pseûdos) pseudonym
pseud- false Greek ψεύδομαι, ψευδής (pseudḗs) pseudonym
psil- bare Greek ψιλοῦν (psiloûn), ψιλός (psilós), ψιλότης, ψίλωσις (psílōsis) epsilon, psilanthropism, psilanthropy, psilocybin, psilosis, psilotic, upsilon
psithyr- whisper Greek ψίθυρος, ψιθυρίζω, ψιθυρισμός Psithyrisma
psittac- parrot Greek ψιττακός, ψιττακοῦ (psittakós, psittakoû) psittacine, psittacism, psittacosis
psoph- noise Greek ψόφος (psóphos), ψοφεῖν, ψοφητικός, ψόφησις, ψόφημα, ψοφοειδής Psophiidae, Psophocichla, psophometer, psophometric
psor- itch Greek ψωρός (psōrós), ψώρα (psṓra), ψωριᾶν (psōriân), (psōríāsis) psora, psoriasis, psoric, psorosis
psych- mind Greek ψύχειν (psúkhein), ψυχή (psukhḗ), ψυχικός (psukhikós) hylopsychism, panpsychism, psyche, psychiatry, psychic, psychoanalysis, psychologist, psychology, psychopathic, psychopathy, psychopomp, psychosis, psychotherapy, psychotic, psychoticism
psychr- cold Greek ψύχω, ψυχρός (psukhrós), ψυχρότης psychroalgia, psychrometer, psychrophile, psychrophilic, psychrophily
pter- wing Greek πτερόν, πτεροῦ (pterón, pteroû), πτέρυξ, πτέρυγος (ptéruks, ptérugos), (pterugōtós), πτερίσκος apterous, apterygote, archaeopteryx, brachypterous, brachyptery, Chiroptera, chiropterologist, Endopterygota, exopterygote, helicopter, hemipterous, heteropterous, homopterous, Neoptera, peripteros, pterodactyl, pteron, pteropod, pterosaur, pterostigma, pterygote, tetrapterous
pterid- fern Greek πτερίς, πτερίδος (pterís, pterídos) pteridology, pteridophyte, pteridosperm
pto- fall Greek πίπτειν (píptein), πτωτός (ptōtós), πτωτικός (ptōtikós), πτῶσις (ptôsis), πτῶμα, πτῶματος (ptôma, ptômatos) anaptotic, asymptomatic, apoptosis, peripeteia, peripety, polyptoton, proptosis, proptotic, ptomaine, ptosis, ptotic, symptom, symptomatic, symptosis
ptoch- poor Greek πτωχός (ptōkhós), πτωχότης ptochocracy, ptochology
pty- spit Greek πτύειν, πτύον (ptúon), πτύσις (ptúsis), πτύαλον hemoptysis, ptyalin, pyoptysis
ptych- fold, layer Greek πτύσσειν (ptússein), πτύγμα (ptúgma), πτύξ (ptúks), πτυχός (ptukhós), πτυχή (ptukhḗ) anaptyctic, anaptyxis, diptych, heptaptych, hexaptych, octaptych, pentaptych, polyptych, tetraptych, triptych
pub- sexually mature Latin pubes, puberis pubescent, pubic
public- public Latin publicus publication, publicity
pude- shame Latin pudere impudent, pudendum, repudiate
pug-, pugn- fight Latin pugnare "to fight", from pugnus "fist" impugn, pugilism, pugnacious, repugnant
pulchr- beautiful Latin pulcher, pulchri pulchritude
pulmon- lung Latin pulmo, pulmonis pulmonary
pulver- dust Latin pulvis, pulveris pulverize
pung-, punct- prick Latin pungere, punctus acupuncture, expunge, poignant, point, punch, punctual, punctuation, puncture, pungent
pup- doll Latin pupa pupa, pupate, puppet
pur- pure Latin purare "to purify", from purus "pure" impurity, pure, puree, purge, purify, purity
purg- cleanse Latin purgare expurgate, purgatory, purge
purpur- purple Latin purpura purpurate, purpureal
put- prune, reckon Latin putāre amputation, compute, dispute, impute, putative, reputation
py- pus Greek πύον (púon), (pyeîn) empyema, pyemia, pyemesis, pyesis, pyocyst, pyogenesis, pyorrhea, pyorrhoea, pyosis, pyoureter
pyel- trough Greek πύελος (púelos), πυελίς pyelectasis, pyelitis, pyelogram, pyelography, pyelonephritis, pyeloscopy
pyg- rump Greek πυγή (pugḗ) callipygian, pygopagus, pygostyle, steatopygia
pyl- gate Greek πύλη (púlē), πυλών, πυλῶνος (pulṓn, pulōnos) apopyle, micropyle, propylaea, prosopyle, pylon, pyloric, pylorus, tetrapylon, Thermopylae
pyr- fire Greek πύρ, πυρός (púr, purós), πυρά (purá), πυρότης, πυρετός, πυρέττειν antipyretic, Empyreuma, pyre, pyrite, pyroclastic, pyrolysis, pyromancy, pyromania, pyromaniac, pyrometric, pyrophobia, pyrophoric, pyrosis, pyrosome, pyrotechnic
Greek πυραμίς, πυραμίδος dipyramid, pyramid, pyramidion
pyrrh- flame-colored Greek πῦρ, πυρρός, πυρρότης, πυρράζω pyrrhic
quadr- four Latin quattuor quadrangle, quadrennial, quadriceps, quadrifarious, quadrifid, quadrifolium, quadrifrons, quadrilateral, quadrilingual, quadriliteral, quadrillion, quadrimester, quadrinational, quadrinodal, quadrinomial, quadrinominal, quadripara, quadrireme, quadrisection, quadrivalent, quadrivium, quadruped, quadruple, quadruplet, quadruplex, quadruplicate, quatrain, quatre, quatrefoil
quadragen- forty each Latin quadrageni quadragenarian, quadragenary
quadragesim- fortieth Latin quadragesimus Quadragesima, quadragesimal
quart- fourth Latin quartus inquartation, interquartile, quadroon, quart, quartal, quartan, quartary, quarte, quarter, quartermaster, quartet, quartic, quartile, quartine, quarto, semiquartile
quasi- as if Latin quasi quasar
quatern- four each Latin quaternī biquaternion, quatern, quaternary, quaternate, quaternion, quaternity, quire
quati-, -cuti-, quass-, -cuss- shake Latin quatere cassate, cassation, concussion, concussive, conquassate, decussation, discuss, discussion, discussive, discutient, excuss, excussio, excussion, fracas, percuss, percussion, percussive, percussor, quash, quassation, recussion, repercussion, rescue, squash, squassation, subconcussive, succuss, succussation, succussion, succussive
quer-, -quir-, quesit-, -quisit- search, seek Latin quaerere, quaesītus acquest, acquire, acquiree, acquirement, acquisite, acquisition, acquisitive, acquisitory, conquer, conquest, corequisite, disquisition, exquire, exquisite, inquest, inquire, inquiry, inquisition, inquisitive, inquisitor, inquisitorial, inquisitory, perquisite, perquisition, prerequisite, quaere, quaestor, query, quest, question, questionable, questionary, questionnaire, questor, reconquer, reconquest, request, require, requirement, requisite, requisition, requisitive, requisitor, requisitory
qui- rest Latin quies, quiētus acquiesce, acquiescence, acquiescent, acquit, acquittal, acquittance, inquietude, quiescence, quiescent, quiet, quietude, quietus, quit, requiem, requiescat
quin- five each Latin quini biquinary, quinarius, quinary, quinate
quindecim- fifteenth Latin quindecimus quindecimal
quinden- fifteen each Latin quindeni quindenary
quinque- five Latin quinque cinquain, cinque, quinquefoil, quinquennial, quinquennium, quinquepartite, quinquevalent
quint- fifth Latin quintus biquintile, quint, quinta, quintal, quintan, quintant, quintary, quinte, quintessence, quintessential, quintic, quintile, quintipara, quintus, semiquintile
quot- how many, how great Latin quotiens quota, quotient, subquotient
rad-, ras- scrape, shave Latin radere, rasus abrade, abrasion, abrasive, corrade, corrasion, erase, erasure, nonabrasive, radula, radular, raduliform, rase, rash, rasorial, raster, rasure, subradular
radi- beam, spoke Latin radius, radiare radiance, radiation
radic- root Latin rādix, rādīcis eradicate, radical
ram- branch Latin rāmus ramification, ramose
ran- frog Latin rana Rana
ranc- rancidness, grudge, bitterness Latin rancere rancid, rancor
rap- rob, seize Latin rapere, raptus arreption, arreptitious, enrapt, enrapture, rapacious, rapacity, rape, rapid, rapidity, rapine, rapt, raptio, raptor, raptorial, rapture, rapturous, raptus, ravenous, ravine, ravish, subreption, subreptitious, surreptitious
rap- turnip Latin rapum rapeseed
raph- sew, seam Greek ῥάπτειν (rháptein), ῤαφή (raphḗ) raphae, raphe
rar- rare Latin rarus rarity
rauc- harsh, hoarse Latin raucus raucous
re-, red- again, back Latin re- recede, redact
rect-, reg-, -rig- straight, direct Latin regere "to direct, lead straight, guide", related rectus "straight, right" correct, direct, dirigible, erect, erection, ergo, rectangle, rectify, rectitude, rectum, regent, regime, regimen, regiment, region, surge
reg-, rex- king Latin rex (genitive regis) regal, regency, regicide, Regis, regulation, reign, rex, royal
regul- rule Latin regula "to rule" regular, regulate, regulation, rule
rem- oar Latin remus bireme, trireme
ren- kidney Latin renes renal
rep-, rept- crawl, creep Latin repere, reptus reptile
resid- left behind Latin residere "remain behind" (see also sedere) reside, residence, resident, residual, residue
ret- net Latin rete reticle, retina
retro- backward, behind Latin retro retrograde, retrospective, retrovirus
rhabd- rod Greek ῥάβδος (rhábdos) rhabdoid, rhabdom, rhabdomancy, rhabdomyolysis, rhabdomyosarcoma
rhach-, rach- spine Greek ῥάχις, ῥάχεως (rhákhis, rhákheōs) rachipagus, rachis, rachischisis, rhachiodont, rhachis
rhag-, rheg- rend, tear Greek ῥηγνύναι (rhēgnúnai), ῥαγίζω, ῥῆξις (rhêksis), ῥῆγμα (rhêgma) bronchorrhagia, hemorrhage, menorrhagia, regma, rhagades, rhegma, rhegmatogenous, rhexis
rhe- flow Greek ῥεῖν (rheîn), ῥυτός (rhutós), ῥύσις (rhúsis), ῥεῦμα (rheûma), ῥοία (rhoía), ῥυθμός (rhuthmós) antiarrhythmic, arrhythmia, arrhythmic, diarrhoea, dysrhythmia, endorheic, eurhythmia, eurhythmic, eurhythmy, gonorrhoea, hemorrhea, logorrhea, polyrhythm, rheology, rheometer, rheostat, rheum, rheumatic, rheumatism, rheumatoid, rheumatology, rhythm, rhythmic, rhyton
rhetin- resin Greek ῥητίνη (rhētínē), ῥητινώδης, ῥητινόω retinite
rhig- chill Greek ῥῖγος (rhîgos) rhigosaurus
rhin- nose, snout Greek ῥίς, ῥινός (rhís, rhinós) catarrhine, haplorhine, platyrrhine, rhinoceros, rhinophyma, rhinoplasty, strepsirrhine
rhiz- root Greek ῥίζα (rhíza), ῥιζοῦν (rhizoûn), ῥίζωμα (rhízōma) ectomycorrhiza, rhizoid, rhizomatous, rhizome, rhizomorph, rhizomorphous, rhizophagous, rhizophagy, Rhizopogon, Rhizopus, rhizosphere
rho- R, r Greek Ρ, ρ, ῥῶ (rhô) rho, rhotacism, rhotacize, rhotic
rhod- rose Greek ῥόδον (rhódon) rhododendron, rhodophyte, rhodopsin
rhomb- spinning top Greek ῥόμβος (rhómbos) orthorhombic, rhomb, rhombic, rhomboid, rhombus, rhumb
rhynch- snout Greek ῥύγχος (rhúnkhos) Oncorhynchus, Rhynchobatus, rhynchophore
rid-, ris- laugh Latin ridere "to laugh" (past participle risus) deride, derision, ridicule, ridiculous, risible
robor- oak, strength Latin roborare "to strengthen", from robur, robus "strength" corroborant, corroborate, corroboration, corroborative, corroborator, robust
rod-, ros- gnaw Latin rodere, rosus corrode, erosion, rodent
rog- ask Latin rogare abrogate, arrogant, arrogate, derogate, derogation, derogatory, interrogation, prerogative, prorogue, rogation, rogue, surrogate
rostr- beak, prow Latin rōstrum brevirostrate, curvirostral, lamellirostral, rostellate, rostelliform, rostellum, rostral, rostrate, rostriform, rostrulum, rostrum
rot- wheel Latin rota, rotare arrondissement, circumrotation, contrarotation, control, controller, decontrol, enroll, enrollee, enrollment, irrotational, multirole, multiroll, redondilla, reenroll, rodeo, role, roll, rondeau, rondel, rondelle, rondo, rotary, rotate, rotation, rotational, rotator, rotatory, rotavirus, rotelle, rotifer, Rotifera, rotiferous, rotiform, rotula, rotund, rotunda, rotundifolious, rotundity, roulette, round, roundel, roundelay, roundlet, rowel, semiround
ruber-, rubr- red Latin ruber erubescence, erubescent, rubella, Rubio, rubious, rubric, rubricate, rubrication, rubricator, ruby
rudi- unskilled, rough, unlearned Latin rudis erudite, erudition, rude, rudiment, rudimentary, rudity
rug- wrinkle Latin rūga, rugare corrugant, corrugate, corrugation, erugate, rugose
rumin- throat Latin rūmen, ruminis rumen, rumenic acid, ruminal, ruminant, ruminate, rumination, ruminator
rump-, rupt- break Latin rumpere, ruptus abrupt, corruptible, disrupt, erupt, eruption, interrupt, rupture
rur- countryside, farm Latin rūs, rūris nonrural, roister, roisterous, rural, rustic, rusticate, rustication, rusticity
sacc- bag Greek σάκκος (sákkos) sack
sacchar- sugar Greek σάκχαρ, σάκχαρον (sákkharon) disaccharide, heteropolysaccharide, homopolysaccharide, lipooligosaccharide, lipopolysaccharide, monosaccharide, oligosaccharide, pentasaccharide, polysaccharide, saccharin, trisaccharide
sacr-, -secr- sacred Latin sacrare, from sacer (genitive sacri) consecrate, desecrate, sacrament, sacred, sacrosanct
sagac- wise Latin sagax, sagacis sagacious, sagacity
sagitt- arrow Latin sagitta sagittal plane, Sagittaria
sal- salt Latin sal, salis, salere salinity
sali-, -sili-, salt- jump Latin salire, saltus desultory, resilient, saliπορφύρα in Liddell and Scottent, saltus
salic- willow Latin salix, salicis salicin
salping- trumpet Greek σάλπιγξ, σάλπιγγος (sálpinks, sálpingos) endosalpingiosis, hysterosalpingography, salpiglossis, salpinx
salu- health, welfare Latin salus salubrious, salubrity, salutary, salute
salv- save Latin salvus, salvare salvage, salvation, salve
san- healthy Latin sanus insane, insanity, sanatorium, sane, sanitarian, sanitarium, sanitary, sanitation, sanity
sanc- holy Latin sancire (past participle sanctus) sacrosanct, saint, sanctify, sanction, sanctuary
sanguin- blood Latin sanguis, sanguinis consanguinity, sanguinary, sanguine
sapi-, -sipi- taste, wise Latin sapere "to have a taste, be wise", related to sapor "taste, flavor" insipid, insipience, sapient
sapon- soap Latin sapo, saponis saponification
sapphir- a precious stone Greek from Hebrew σάπφειρος (sáppheiros) sapphire, sapphirine
sapr- rotten Greek σήπειν, σαπρός (saprós), σαπρότης sapraemia, saprogenic, saprophagous, saprophyte, saprotrophic
sarc- flesh Greek σάρξ, σαρκός (sárks, sarkós) perisarc, sarcasm, sarcastic, sarcocele, sarcoid, sarcoidosis, sarcoma, sarcophagus, Sarcopterygii, sarcosine, sarcosinemia, sarcosome
sarc- tailor Latin sartor "tailor", from sarcire "to mend" consarcination, sartor, sartorial, sartorius
sati- enough Latin satis asset, sate, satiate, satiety, satisfy, saturate
saur- lizard, reptile Greek σαύρα (saúra), σαῦρος (saûros) dinosaur, Saurischia, sauropod
sax- rock Latin saxum saxatile, saxicavous, saxicoline, saxifrage, saxifragous
scab- scratch Latin scabere scabies
scal- ladder, stairs Latin scala scalar, scale
scalen- uneven Greek σκαληνός (skalēnós) scalene, scalene muscles, scalene triangle, scalenohedron
scand-, -scend-, scans-, -scens- climb Latin scandere ascend, ascendency, ascendent, ascension, ascent, condescend, condescendence, condescension, descend, descendent, descension, descent, scansion, transcend, transcendence, transcendent, transcendental
scandal- snare Greek σκάνδαλον (skándalon), σκανδαλίζω (skandalízō) scandal, scandalize
scap- shaft Greek σκᾶπος (skâpos) scape, scapus
scaph- anything hollow, bowl, ship Greek σκάφη, σκάφος Scaphirhynchus, scaphoid bone, scaphopod
scat- dung Greek σκῶρ, σκατός (skôr, skatós) scatemia, scatology, scatoma, scatomancy, scatophagy, scatoscopy
sced- scatter Greek σκεδαννύναι (skedannúnai), σκέδασις (skédasis), (skedastós), (skedastikós) heteroscedastic, homoscedastic
scel- leg, thigh Greek σκέλος, σκέλεος (skéleos) isosceles, triskele, triskelion
scen- booth, tent Greek σκηνή (skēnḗ) parascenium, proscenium, scene, scenic, scenography
scept-, scop- look at, examine, view, observe Greek σκέπτεσθαι (sképtesthai), σκέψις (sképsis), σκέμμα, σκεπτικός (skeptikós), σκοπεῖν (skopeîn), σκοπός, σκοποῦ (skopós) Abroscopus, diascopic, diascopy, endoscope, endoscopic, endoscopy, epidiascope, episcope, episcopic, gastroscopy, kaleidoscope, macroscopic, microscope, microscopic, panendoscopy, periscope, periscopic, scope, scopophobia, skeptic, stereoscopic, stereoscopy, stethoscope, telescope, telescopic, Telescopium
schem- plan Greek σχῆμα (skhêma) schema, schematic, schematism, schematize, scheme
schid- split Greek σχίζειν (skhízein), σχιστός (skhistós), σχίσις (skhísis), σχίσμα (skhísma), σχίζα diaschisis, diaschisma, schisis, schism, schisma, schismatic, schizocarp, schizogamy, schizogony, schizoid, schizophrenia, schizotrichia
sci- shade, shadow Greek σκιά (skiá), σκιάς sciamachy, sciaphobia
sci- know Latin scire conscience, conscious, conscientious, omniscious, omniscient, prescient, science, scienter
scind-, sciss- split Latin scindere rescind, scissors
scler- hard Greek σκέλλειν (skéllein), σκληρός (sklērós), σκληρότης (sklērótēs) sclera, sclerectomy, scleredema, sclereid, sclerema, sclerenchyma, sclerite, scleritis, scleroderma, sclerophyll, sclerophyllous, sclerosis, sclerotic, sclerotium, sclerotize
scolec- worm Greek σκώληξ, σκώληκος (skṓlēks, skṓlēkos) scolex
scoli- crooked Greek σκολιός (skoliós), σκολιότης scoliokyphosis, scoliosis
scombr- mackerel Greek σκόμβρος (skómbros) scombrid, scombroid
scot- darkness Greek σκότος, σκότου, σκοταῖος scotoma, scotophobia, scotophobotaxis
scrib-, script- write Latin scribere, scriptus describe, inscribe, manuscript, prescribe, scribble, scribe, script, scripture, subscribe
scrupl- uneasiness Latin scrupus "sharp stone" scruple, scrupulous, unscrupulous
sculp- carve Latin sculpere, sculptus sculpture
scut- shield Latin scutum scute
scyph- cup Greek σκύφος (skúphos) scyphoid, Scyphozoa, scyphus
se-, sed- apart Latin se secede, sedition, seditious, seduce
seb- tallow Latin sebum sebaceous, sebum
sec-, sect-, seg- cut Latin secare secant, section, segment
sed- settle, calm Latin sedare, sedatus sedative
sed-, -sid-, sess- sit Latin sedere, sessus assiduous, insidious, obsession, possess, preside, president, reside, resident, sedentary, sediment, sedimentary, sedulity, sedulous, session, subside, supersede
sedec- sixteen Latin sedecim sedecimal
seget- in cornfields Latin segetum
sei- shake Greek σείειν (seíein), σεισμός (seismós), σεῖστρον (seîstron) aseismic, microseism, microseismic, paleoseismology, seism, seismic, seismogram, seismograph, seismology, seismometer, seismonasty, sistrum, teleseism, teleseismic
selen- moon Greek σελήνη (selḗnē) paraselene, selaphobia, Selene, selenium, selenocentric, selenography, selenology
sell- saddle, seat Latin sella sella turcica
sema- sign Greek σῆμα (sêma) aposematic, asemasia, asemia, asemic, pentaseme, polyseme, polysemic, polysemous, polysemy, semantics, semaphore, semasiology, sematic, seme, sememe, semiotic, tetraseme, triseme
semi- half Latin semis semiannual, semicolon, semiconductor, semiconscious, semifinal, seminatural
semin- seed Latin semen, seminis insemination
sen- old man Latin senex, senis senator, senescent, senile, senility, senior
sen- six each Latin seni senary
senti-, sens- feel Latin sentire, sensus assent, consensus, consent, dissent, resent, scent, sensation, sense, sensible, sensitive, sensory, sentence, sentient, sentience, sentiment
sep- rot Greek σήψ (sḗps), σήπειν (sḗpein), σηπτός (sēptós), σηπτικός (sēptikós), σῆψις (sêpsis), σηπία (sēpía) antisepsis, antiseptic, asepsis, aseptic, sepia, sepsis, septic
sept- fence, partition, enclosure Latin saeptum transept
sept- seven Latin septem septennial
septen- seven each Latin septeni septenary
septim- seventh Latin septimus septimal, septime
septuagen- seventy each Latin septuageni septuagenary
septuagesim- seventieth Latin septuagesimus septuagesima, septuagesimal
septuagint- seventy Latin septuaginta Septuagint
sequ-, secut- follow Latin sequere, from sequi, see also secutus consecutive, consequence, ensue, non sequitur, obsequious, prosecute, pursue, second, sequel, sequence, subsequent
ser- silk Greek σήρ (sḗr), σηρικός sericin, serigraph
ser- sow Latin serere, satus disseminate, dissemination, insemination, postseason, preseason, sation, sative, season, seasonable, seasonal, semen, semenuria, seminal, seminar, seminarian, seminary, semination, seminiferous
ser- attach, join Latin serere, sertus assert, assertion, assertive, curviserial, desert, desertion, desertrix, dissert, dissertation, dissertator, exert, exertion, insert, insertion, multiseriate, reassert, reassertion, rectiserial, semidesert, serial, seriate, seriatim, series, sermon, uniseriate
ser- whey Latin serum serac, serosa, serous, subserous
ser- late Latin sērus serein, serotine, serotinous, serotiny, soiree
serp- crawl, creep Latin serpere, serptus serpent
serr- saw, saw-toothed Latin serra, serrare biserrate, serrate, serration, serrature, serriform, serrulate, sierra, sierran
serv- save, protect, serve Latin servare conserve, deserve, observe, preserve, reserve, servant, service, servile, servitude, subservient
sesqui- one and a half Latin sesqui sesquialteral, sesquicentennial, sesquipedal, sesquiplicate, sesquitertian
set- bristle, hair Latin saeta seta, setose
sever- stern, strict, serious Latin severus asseverate, asseveration, perseverance, perseverant, perseverate, perseveration, perseverative, persevere, severe, severity
sex-, se- six Latin sex semester, sexangle, sexangular, sexavalent, sexennial, sexennium, sexireme, sexivalent, sexpartite, sexradiate, sextain
sexagen- sixty each Latin sexageni sexagenarian, sexagenary
sexagesim- sixtieth Latin sexagesimus Sexagesima, sexagesimal
sext- sixth Latin sextus bissextile, bissextus, semisextile, sestet, sestina, Sext, sextain, sextan, sextans, sextant, sextary, sextic, sextile, sextillion, siesta, sixte
sibil- hiss Latin sibilus, sibilare sibilance
sicc- dry Latin siccare "to dry", from siccus "dry, thirsty" desiccate, desiccation, sec, siccative
sicy- cucumber Greek σίκυος (síkuos) Sicyos
sider- iron Greek σίδηρος (sídēros), σιδήρεος siderodromophobia, siderophile
sider- star Latin sidus, sideris sidereal
sigm- S, s Greek σίγμα, σῖγμα (sîgma) sigma, sigmatism, sigmatropic, sigmoid, sigmoidoscopy
sign- sign Latin signum design, designate, insignia, signal, signature, significant
sil- quiet or still Latin silere silence
silv- forest Latin silva silviculture
simi- ape, monkey Latin simia simian
simil-, simul- likeness, imitating Latin simulare "to emulate", from similis "alike" assimilate, dissimilate, dissemble, ensemble, resemble, semblance, similar, similarity, simile, similitude, simulacrum, simular, simulate, simulation, simulator, simultaneous, verisimilar, verisimilitude
sinap- mustard Greek σίναπι (sínapi), (sināpízein), (sināpismós) sinapine, sinapism
singul- one each Latin singulus singular
sinistr- left Latin sinister, sinistri sinistral
sinu- (to draw) a line Latin sinuare insinuate
sinus- hollow, bay Latin sinus sinusoidal
siop- silence Greek σιωπή (siōpḗ), σιωπᾶν (siōpân), σιωπητέος (siōpētéos), σιώπησις (siṓpēsis) aposiopesis, aposiopetic
siph- tube Greek σίφων (síphōn) siphon, siphonoglyph
sist- cause to stand Latin sistere assist, consist, desist, exist, insist, persist, resist, solstice, subsist
sit- food, grain, wheat Greek σῖτος, σίτου (sîtos, sítou) ectoparasite, endoparasite, endoparasitoid, epiparasite, hyperparasitism, kleptoparasitism, mesoparasite, parasite, parasitic, parasitism, parasitoid, sitology, syssitia
siz- hiss Greek σίζω, σίξις (síksis)
smaragd- emerald Greek σμάραγδος (smáragdos), σμαράγδινος (smarágdinos) smaragdine
smil- carving knife Greek σμίλη (smílē), σμιλεύω, σμιλευτός, σμίλευμα smilodon
soci- group Latin socius, sociare associate, association, associative, consociate, consociation, consociational, disassociate, disassociation, dissociable, dissocial, dissociate, dissociation, dissociative, interassociation, nonassociative, sociability, sociable, social, sociality, societal, society
sol- sun Latin sol, solis circumsolar, extrasolar, insolate, insolation, solar, solarium, soliform, soliscence, solstice, subsolar
sol- comfort, soothe Latin solari consolation, console, solace
sol- alone, only Latin solus desolate, desolation, desolatory, saudade, sole, soliloquy, solitaire, solitary, solitude, solitudinarian, solitudinous, solivagous, solo, sullen
sole- accustomed Latin solere "be accustomed" insolence, insolent, obsolescence, obsolescent, obsolete
solen- channel, pipe Greek σωλήν (sōlḗn) solenocyte, solenodon, solenogaster, solenoid, Solenopsis
solv-, solut- loosen, set free Latin solvere, solutus absolute, absolve, dissolute, dissolve, resolute, resolve, soluble, solute, solution, solve, solvent
soma- body Greek σῶμα, σώματος (sôma, sṓmatos) allosome, autosome, centrosome, chromosome, decasomy, disomy, gonosome, heptasomy, heterochromosome, hexasomy, metasomatic, metasomatism, microsome, microsomia, monosome, monosomy, pentasomy, plasmosome, polysomy, pyrosome, somatic, somatomancy, somatoparaphrenia, somatopleure, somite, tetrasomy, trisomy
somn- sleep Latin somnus insomnia, somnambulist, somnifacient, somniferous, somnific, somniloquy, somnolent
somni- dream Latin somnium somnial
son- sound Latin sonus absonant, ambisonic, assonance, assonant, assonate, consonance, consonant, consonous, dissonance, dissonant, inconsonance, inconsonant, infrasonic, infrasound, magnisonant, resonance, resonant, resonate, resound, sonance, sonant, sonata, sondage, sonnet, sonorant, sonority, soun, sound, subsonic, supersonic, triconsonantal, ultrasonic, ultrasound
soph- wise Greek σοφός (sophós), σοφία (sophía), σόφισμα (sóphisma), σοφισμός (sophismós) antisophism, philosophy, sophism, sophist, sophistry, sophisticate, Sophocles, sophomore, sophomoric
sopor- deep sleep Latin sopor sopor, soporific
sorb-, sorpt- suck Latin sorbere absorb, absorption
sord- dirt Latin sordes, sordere sordid
soror- sister Latin soror cousin, sororal, sororate, sororicide, sorority
spa- draw, pull Greek σπᾶν (spân), σπάσις (spásis), σπασμός (spasmós), σπάσμα (spásma), σπαστικός (spastikós), σπώμενον (spṓmenon), σπάδιξ (spádiks), σπαδίζω antispasmodic, palinspastic, perispomenon, properispomenon, spadix, spasm, spasmatic, spasmodic, spasmogenic, spasmolytic, spastic
spad- eunuch Greek σπάδος (spádos), σπάδων (spádōn), σπαδοειδής epispadias, hypospadias
spars-, -spers- scatter, sprinkle Latin spargere asperse, aspersion, disperse, intersperse, sparse
spath- blade Greek σπάθη (spáthē) spade, spatha, spathe, spay
spati- space Latin spatium interspace, interspatial, space, spatial, spatiate, subspace
spec-, -spic-, spect- look Latin specere, spectare, speculari aspect, conspicuous, expect, inspect, introspective, prospect, respect, retrospective, species, specific, specimen, specious, spectacle, spectator, speculate
speir-, spor- sow Greek σπείρω (speírō), σπαρτός, σπορά, σποράς, σποράδος (sporás, sporádos), σποραδικός (sporadikós), σπόρος (spóros) aplanospore, archesporium, carpospore, chlamydospore, diaspora, diaspore, endospore, esparto, eusporangium, exospore, heterosporous, heterospory, homosporous, isosporous, leptosporangium, megasporangium, megaspore, microsporangium, microspore, mitospore, sporadic, sporangiospore, sporangium, spore, sporocarp, sporophyte, teliospore, tetraspore, tetrasporophytic, zygospore
spele- cavern Greek σπέος (spéos), σπήλαιον (spḗlaion) speleogen, speleogenesis, speleology, Speleomantes, speleomorphology, speleoseismite, speleothem, speleotherapy
spelyng- cave Greek σπῆλυγξ, (spêlynx, spēlyng-) spelunk
spend-, spond-
Greek σπένδειν (spéndein), σπονδή, σπονδάς (spondḗ, spondás), σπονδεῖος, σπονδικός spondaic, Sponde, spondee
sper- hope Latin spes, sperare despair, desperado, desperate, desperation, esperance, prosper, prosperity, prosperous
sperm- seed Greek σπέρμα, σπέρματος (spérma, spérmatos) angiosperm, endosperm, gymnosperm, perisperm, sperm, spermatid, spermatocyte, spermatogenesis, spermatogonium, spermatozoon, stenospermocarpy
sphal- cause to fall Greek σφάλλειν (sphállein), σφαλερός (sphalerós), σφαλλόμενον sphalerite, sphaleron
sphen- wedge Greek σφήν, σφηνός (sphḗn, sphēnós) sphenic, Sphenodon, sphenoid
spher- ball Greek σφαῖρα (sphaîra) aspheric, hemisphere, hypersphere, mesosphere, pseudosphere, sphere, spherics, spheroid, spherometer, spherulite, stratosphere, trimetasphere
sphing-, sphinct- strangle Greek σφίγγειν (sphíngein), Σφίγξ sphings, σφιγκτήρ sphincter
sphondyl- vertebra Greek σφόνδυλος, σφονδύλου (sphóndulos, sphondúlou) spondylitis, spondylolisthesis, spondylolysis, spondylosis, Temnospondyli
sphrag- seal Greek σφραγίς (sphragís), (sphragistikós), σφραγίζω sphragistic
sphyg- pulse Greek σφύζειν (sphúzein), σφυγμός (sphugmós), (sphugmikós), (sphúxis) asphyxia, sphygmic, sphygmochronograph, sphygmograph, sphygmomanometer, sphygmus
spic- spike Latin spica spica, spicate, spicose, spicosity, spicular, spiculate, spicule, spiculiform
spin- thorn Latin spina infraspinate, infraspinatus, interspinal, spinal, spine, spinel, spinescent, spiniferous, spiniform, spinose, spinous
spir- breathe Latin spirare aspire, conspire, expire, inspire, perspire, respiration, spirit
splen- spleen Greek σπλήν (splḗn), splēnikós asplenia, hypersplenism, hyposplenia, polysplenia, splenectomy, splenic, splenitis, splenoid, splenomegaly
spond-, spons- a surety, guarantee; give assurance, promise solemnly Latin spondere, sponsus respond
spondyl- vertebra Greek σπόνδυλος (spóndulos) platyspondyly, spondylid, spondylolisthesis, spondylolysis, spondylopyosis, spondyloschisis, spondylosis, spondylosyndesis, Spondylus
spu-, sput- spew, spit Latin spuere sputum
squal- scaly, dirty, filthy Latin squalere squalid, squalor
squam- scale Latin squama squamous
squarros- spreading at tips Latin squarrosus squarrose
st- cause to stand Greek ἵστημι histēmi, histánai antistatic, ecstatic, stasis, static, systasis, system
st- stand Latin stare "to stand", also causative form statuere "to enact, set", from status "condition, position" circumstance, consist, constant, constitute, distant, extant, instant, obstacle, presto, stable, stamen, stamina, stance, stanchion, stanza, state, station, stationary, statistic, statue, status, staunch, stay, substance, substitute, superstition
stagn- pool of standing water Latin stagnare stagnant
stala- dripping, trickling Greek σταλακτός (stalaktós) and σταλαγμός (stalagmós), both from σταλάζειν (stalázein) "to drip" stalactite, stalagmite
stann- tin Latin stannum stannous
staphyl- bunch of grapes Greek σταφυλή (staphulḗ) staphyledema, staphylion, staphylococcus, staphyloderma, staphyloplasty
stasi- standing, discord Greek στάσις (stásis) static
statu-, -stitu- stand Latin statuere institution, statute
steat- fat, tallow Greek στέαρ, στέατος (stéar, stéatos) stearic acid, steatolysis, steatolytic, steatosis
steg- cover Greek στέγη (stégē), στεγανός (steganós) steganography, steganopod, Stegosaurus
stell-, stol- send Greek στέλλω (stéllō), στάλσις (stálsis), στολή (stolḗ) apostle, centrostaltic, diastole, epistle, epistolic, epistolize, epistolography, eusystole, hypodiastole, peristalsis, peristaltic, peristole, stole, systaltic, systole
stell- star Latin stella constellation, stellar
sten- stand Greek στεναί (stenaí) apostasy, apostate
sten- narrow Greek στενός (stenós) stenography, stenosis
stere- solid Greek στερεός (stereós) allosteric, stereochemistry, stereochromy, stereographic, stereography, stereoisomer, stereometry, stereophonic, stereopsis, stereoscope, stereoscopy, stereotaxis, stereotomy, stereotype, stereotypic, steric
stern-, strat- spread, strew Latin sternere, stratus consternation, prostrate, stratify, stratum, stratus, street
stern- breastbone Greek στέρνον (stérnon) metasternum, sternum
steth- chest Greek στῆθος (stêthos) stethoscope
sthen- strength Greek σθένος (sthénos) asthenia, asthenosphere, callisthenics, hyposthenia, sthène, sthenia
stich- line, row Greek στείχειν (steíkhein), στίχος (stíkhos) acrostic, cadastre, distich, distichous, haplostichous, hemistich, heptastich, monostich, monostichous, orthostichy, pentastich, polystichia, polystichous, stich, stichic, stichomancy, stichometry, stichomythia, telestich
stich- tunic Greek στίχη (stíkhē), στιχάριον (stikhárion) sticharion
stig- mark, puncture Greek στίζειν (stízein), στίξις (stíksis), στίγμα, στίγματος (stígma, stígmatos) anastigmat, anastigmatic, astigmatic, astigmatism, stigma, stigmatic
still- drip Latin stilla, stillare distillation, instill
stimul- goad, rouse, excite Latin stimulus stimulate
stin- stand Latin stinare destination, obstinate
stingu-, stinct- apart Latin stinguere distinction, distinguish
stoch- aim Greek στόχος (stókhos), στοχαστικός (stokhastikós), στόχασμα stochastic
stom- mouth Greek στόμα, στόματος (stóma, stómatos) anastomosis, anastomotic, deuterostome, monostomous, ozostomia, pentastomid, protostome, stoma, stomach, stomatalgia, stomatic, stomatoplasty, -stome
stor- spread, strew Greek στορέννυμι (storénnumi), στόρνυμι, στρῶμα (strôma) biostrome, stroma
strat- army Greek στρατός (stratós), στρατηγία (stratēgía) stratagem, strategic, strategist, strategus, strategy, stratocracy, stratography, stratonic
streper- noise Latin strepere obstreperous
streph-, stroph-, strob-, stromb- turn Greek στρέφειν (stréphein), στρεπτός (streptós), στροφή (strophḗ) anastrophe, antistrophe, apostrophe, boustrophedon, catastrophe, catastrophic, catastrophism, epistrophe, monostrophe, monostrophic, strophe, strophic
strept- twisted Greek στρέφειν, στρεπτός (streptós), στρεψίς (strepsís) Strepsiptera, strepsirrhine, streptococcus
strig- compress Latin strix, strigis strigogyps
strigos- having stiff bristles Latin strigosus from striga strigose
string-, strict- tight, upright, stiff Latin stringere, strictus astringent, constrain, constrict, constringe, restrict, strain, strict, stringent
stroph- turn Greek

stru-, struct- to make up, build Latin struere, structus construct, construction, construe, destroy, destruct, instruct, obstruct, structure
stud- dedication Latin studere étude, student
stup- wonder Latin stupere stupid, stupor
styg- Styx Greek Στύξ, Στυγός (Stúks, Stugós), Στύγιος Stygian, stygiophobia
styl- column, pillar Greek στῦλος (stûlos), στυλόω (stulóō) amphiprostyle, amphistyly, anastylosis, araeostyle, araeosystyle, blastostyle, diastyle, epistyle, eustyle, hexastyle, hyostyly, hypostyle, monostylous, octastyle, orthostyle, peristyle, prostyle, pycnostyle, stylite, Stylites, stylobate, styloid, stylus, systyle
su-, sut- sew Latin suere, sutus couture, suture
suad-, suas- urge Latin suadere, suasus persuasion
suav- sweet Latin suavis assuage, suave, suavity
sub-, su-, suf-, sug-, sup-, sus- below Latin sub submarine, submerge, suffix, suggest, support
subter- under Latin subter subterfuge
sucr- sugar Latin succarum sucrose
sud- sweat Latin sudare exudate, exude, sudarium, sudoriferous, transudate
sui- self Latin sui sui generis, suicide
sulc- furrow Latin sulcus sulcus
sum- sum Latin summare "to sum up", from summa "sum" consummate, consummation, sum, summa cum laude, summary, summation
sum-, sumpt- take Latin sumere, sumptus assume, assumption, consume, consumption, presumption, subsume
super- above, over Latin super insuperable, soprano, sovereign, summit, superable, superb, supercilious, supercomputer, superficial, superfluous, superimpose, superior, superlative, supermarket, supernal, supernatural, supernova, superposition, superpower, superscript, supersede, supersonic, superstition, supervene, supervise, supreme, supremum, surname, surplus, surround, survive
supin- lying back Latin supinus supination, supine
supra- above, over Latin supra supranationalism
surd- deaf Latin surdus absurdity
surg- rise Latin surgere insurgent, insurrection, resurgent, resurrection
sybar- Sybaris Greek Σύβαρις, συβάρεως, Συβαρίτης Sybarī́tēs, Συβαριτικός Sybarite, sybaritic, sybaritism
syc- fig Greek συκῆ, σῦκον (sûkon) sycomancy, sycophant
syn-, sy-, syg-, syl-, sym-, sys- with Greek σύν (sún) syllogism, symbol, symmetry, sympathy, synonym, synchronous, synonym, system
syring- pipe Greek σύριγξ, σύριγγος (súrinks, súringos) syringe, Syringodea, Syringoderma, Syringogaster, syringoma, syringomyelia, syrinx
tac-, -tic- be silent Latin tacere, tacitus reticent, reticence, tacit, taciturn
tach- swift Greek ταχύς (takhús), τάχος (tákhos) tachometer, tachycardia, tachyrhythmia, tachytelic
taeni- ribbon Greek τείνειν (teínein), ταινία (tainía), ταινίδιον (tainídion) diplotene, leptotene, pachytene, taenia, taenidia, taenidium, taeniodont, Taeniolabis, zygotene
tag- arrange, order Greek τάσσειν (tássein), τακτός (taktós), τακτικός (taktikós), τάξις (táksis), τάγμα (tágma) ataxia, chemotaxis, epitaxis, eutaxy, hypotaxis, magnetotaxis, metasyntactic, parataxis, phonotactic, phonotactics, phototaxis, rheotaxis, syntactic, syntagma, syntagmatic, syntax, tactic, tagma, taxis, taxonomy, thermotaxis
tal- ankle Latin talus talus
tang-, -ting-, tact-, tag- touch Latin tangere (past participle tactus) attain, contact, contagious, contingent, contingency, contiguous, intact, tactile, tangent, tangible
tapet- carpet Latin tapete, tapetis tapestry, tapetum, tapis
tarac- stir Greek ταράσσειν (tarássein), ταρακτός, ταρακτικός, τάραγμα, θράσσω ataractic, ataraxia
tard- slow Latin tardus retard, tardigrade, tardy
tars- ankle Greek ταρσός (tarsós, "a flat basket") metatarsus, tarsal, tarsoclasis, tarsometatarsus, tarsus
taur- bull Greek ταῦρος (taûros) Minotaur, taurobolium, taurocholic, tauromachy
taur- bull Latin taurus Taurus
tec- melt Greek τήκειν eutectic, eutectoid
tec-, toc- childbirth Greek τίκτειν, τόκος (tókos) ditokous, dystocia, embiotocid, monotocous, teknonymous, teknonymy, tokophobia
techn- art, skill Greek τίκτειν (tíktein), τέχνη (tékhnē), τέκτων, τέκτονος (téktōn, téktonos), τεκτονικός (tektonikós) architect, polytechnic, techne, technique, technocracy, technocrat, technogaianism, technology, technophilia, technophobia, tectonic
tecn- child Greek τίκτω, τέκνον, τέκνου (téknon, téknou) teknonymous, teknonymy
teg-, tect- cover Latin tegere, tectus contection, detect, detectible, detection, detective, detector, integument, integumentary, obtect, pretectal, pretectum, protect, protection, protective, protector, protectorate, protectory, protectress, protectrix, protégé, protégée, tectrix, tectum, tegmen, tegmental, tegula, tegular, tegument, tile, tog, toga, togate, togavirus, toggery
tele- far, end Greek τῆλε (têle) telegram, telegraph, telemetry, telepathy, telephone, telescope, television
tele- complete Greek τέλος, τέλεος (télos, téleos), τέλεσις (télesis) atelectasis, ateleiosis, atelophobia, teleology, telesis, toll
tem-, tom- cut Greek τέμνειν (témnein), τομός (tomós), τόμος (tómos), τομή (tomḗ), τμῆσις (tmêsis) acrotomophilia, anatomy, apotemnophilia, atom, atomic, autotomy, diatom, dichotomous, dichotomy, ectomy, entomology, entomomancy, entomophagous, entomophilous, epitome, monatomic, pentatomic, polyatomic, polytomy, Temnospondyli, tmesis, tome, tomogram, tomography, trichotomous, trichotomy
temn-, tempt- Latin temnere contemn, contemnible, contempt, contemptible, contumacious, contumacy, contumelious, contumely
tempor- time Latin tempus, temporis contemporaneous, contemporary, extemporaneous, tempo, temporal, temporary
ten-, ton- stretch Greek τείνειν (teínein), τεινόμενον, τανύειν (tanúein), τετανός (tetanós), τόνος (tónos), τονικός (tonikós), τονή (tonḗ), τάσις (tásis), ταινία anhemitonic, atelectasis, atonic, atritonic, barytone, catatonia, catatoniac, catatonic, decatonic, diatonic, ditone, dodecatonic, dystonia, ectasia, enneatonic, entasia, entasis, epitasis, hemitonia, hemitonic, heptatonic, hexatonic, hyperisotonic, hypertonia, hypertonic, hypotenuse, hypotonia, hypotonic, isotonic, microtone, monotone, monotonic, monotonous, monotony, neoteny, octatonic, oxytone, paroxytone, pentatonic, peritoneum, polytonic, proparoxytone, protasis, pyelectasis, syntonic, tetanolysin, tetanospasmin, tetanus, tetany, tetratonic, tone, tonic, tonoplast, tritonic, tune
ten-, -tin-, tent- hold, keep Latin tenere, tentus abstain, abstention, abstinence, abstinent, appertain, appertinent, appurtenance, appurtenant, contain, containment, content, contentive, contentment, continence, continent, continental, continual, continuance, continuant, continuation, continuative, continue, continuity, continuous, continuum, contratenor, countenance, detain, detainder, detainee, detainer, detainment, detention, detinue, discontent, discontentment, discontinuance, discontinuation, discontinue, discontinuity, discontinuous, entertain, entertainment, equicontinuity, equicontinuous, impertinence, impertinent, incontinence, incontinent, intenible, intercontinental, irretentive, lieutenant, maintain, maintenance, malcontent, obtain, obtainment, obtention, pertain, pertinacious, pertinacity, pertinence, pertinent, purtenance, reobtain, retain, retainer, retainment, retention, retentive, retinue, se-tenant, sustenance, sustentacular, sustentaculum, sustentation, sustention, tenable, tenace, tenacious, tenacity, tenancy, tenant, tenet, tenor, tenure, tenurial, tenuto, transcontinental
tend-, tens- stretch, strain Latin tendere (past participle tensus) ambitendency, attempt, attend, attendee, attent, attention, attentive, coextend, coextension, coextensive, contend, contention, contentious, detent, détente, distend, distension, distent, distention, entendre, entente, extend, extensible, extension, extensional, extensionality, extensive, extensivity, extensor, extent, inattention, inattentive, inextensible, intend, intense, intensification, intension, intensional, intensity, intensive, intent, obtend, obtension, ostensible, ostension, ostensive, ostensory, ostent, ostentation, ostentatious, portend, portension, portent, portentous, pretend, pretense, pretension, subtend, subtense, superintend, superintendency, superintendent, tempt, temptation, tend, tendency, tendential, tendentious, tender, tense, tensible, tensile, tensility, tension, tensure, tent, tentacle, tentacular, tentage, tentation, tentative, tentiginous, tentorium
tenu- slender, thin Latin tenuare "make thin", from tenuis "thin" attenuate, extenuate, tenuous
tep- be warm Latin tepere subtepid, tepefaction, tepid, tepidarium, tepidity, tepor
ter-, trit- rub, wear Latin terere, tritus attrition, contrite, contrition, detriment, detrimental, detrital, detrition, detritivore, detritivorous, detritus, retriment, tribulation, trite, triturate, trituration, triture
tere- guard Greek τηρεῖν (tēreîn), τήρησις (tḗrēsis) synteresis
teret- rounded Latin teres, teretis subterete, teretial
terg-, ters- wipe Latin tergere, tersus absterge, abstergent, abstersion, abstersive, deterge, detergency, detergent, terse
termin- boundary, limit, end Latin terminus determine, interminable, terminal, termination
tern- three each Latin terni ternary, ternion
terr- earth Latin terra inter, subterranean, terrace, terracotta, terrain, terrarium, terrestrial, territory
terti- third Latin tertius tertian, tertiary
test- witness Latin testis attest, contest, detest, protest, testament, testify, testimony
tetart- fourth Greek τέταρτος (tétartos) tetartanopsia, tetartohedric
tetr- four Greek τέτϝαρες, τέσσαρες, τεσσάρων (téssares, tessárōn) diatessaron, tetragon, tetrahedron, tetralogy, tetrameter, tetraphobia, tetrapod, tetrode
teuch- make Greek τεύχειν (teúkhein), τυγχάνω, τευκτός, τευκτικός, τεῦξις (teûksis), τεῦγμα (teûgma), τεῦχος, τεύχεος (teûkhos, teúkheos), τύχη (túkhē), τυκτός (tuktós) Heptateuch, octateuch, Pentateuch
tex-, text- weave Latin texere, textus context, subtle, pretext, text, textile, texture
thalam- chamber, bed Greek θάλαμος (thálamos) epithalamion, hypothalamus, prothalamion, thalamotomy, thalamus
thalass- sea Greek θάλασσα (thálassa) Panthalassa, thalassemia, thalassic, thalassophobia
than- death Greek θνήσκειν, θάνατος (thánatos) euthanasia, thanatocoenosis, thanatoid, thanatology, thanatophobia, thanatophoric, thanatopsis
the-, thus- god Greek θεός (theós) atheism, atheistic, ditheism, enthusiasm, monotheism, Pantheon, polytheism, Thea, theobromine, theocracy, theodicy, Theodore, theogony, theology, theophobia, Timothy, tritheism
the- put Greek τιθέναι (tithénai), θετός (thetós), θετικός (thetikós), θέσις (thésis), θέμα (théma), θήκη (thḗkē) anathema, anathematic, antithesis, antithetic, apothecium, athematic, Bibliotheca, bodega, boutique, deem, doom, enthesis, enthetic, epenthesis, epenthetic, epitheca, epithet, hypothec, hypothesis, monothematic, nomothetic, oligosynthetic, parenthesis, parenthetic, polysynthetic, prosthesis, prosthetic, prothesis, prothetic, pseudothecium, synthesis, synthetic, theca, thecium, thematic, theme, Themis, thesaurus, thesis, treasure
thea- view Greek θεᾶσθαι (theâsthai), θέατρον (théatron) amphitheatre, metatheatre, theatre, theatric
thel- nipple Greek θηλή (thēlḗ) athelia, endothelium, epithelium, mesothelioma, mesothelium, thelium, thelial
theori- speculation Greek θεωρητικός (theōrētikós), θεώρημα (theṓrēma), θεωρία (theōría) theorem, theoretic, theorist, theorize, theory
ther- beast, animal Greek θήρ, θηρός (thḗr, thērós) therianthropy, theroid, theropod, theropsid
therap- serve Greek θεράπων (therápōn), θεραπεύειν (therapeúein), θεραπευτός, θεραπευτικός (therapeutikós), θεραπεία (therapeía) therapeutic, therapist, therapy
therm- heat, warm Greek θέρεσθαι (théresthai), θέρμη (thérmē), θερμός (thermós) thermal, athermancy, diathermancy, ectotherm, endotherm, endothermic, exothermic, geothermic, homeothermy, hyperthermia, hypothermia, isotherm, poikilotherm, thermobaric, thermochromism, thermodynamic, thermolysis, thermometer, thermophilic, thermophobia, thermoplastic, thermoplegia, thermos, thermosphere, thermostat, thermostatic
thig- touch Greek θιγγάνειν (thingánein), θίξις (thíksis), θίγημα (thígēma) antithixotropic, thigmonasty, thigmotaxis, thixotropic, thixotropy
thorac- chest Greek θώραξ, θώρακος (thṓraks, thṓrakos) hemothorax, pneumothorax, thoracic, thorax
thym- mood Greek θυμός (thumós) dysthymia
thyr- door Greek θύρα (thúra) thyratron
thyre- large shield Greek θυρεός (thureós) Thyreophora, thyroid, thyrotropin, thyroxine
tim- be afraid Latin timere timid, timorous
ting-, tinct- dye, moisten Latin tingere, tinctus aquatint, distain, mezzotint, tinct, tinctorial, tincture, tinge, tingent, tint
tom- cut Greek τομή (tomḗ), τόμος (tómos) anatomy, appendectomy, atom, dichotomy, ectomy, embolectomy, tome, tonsillectomy, vasectomy
ton- stretch Greek τείνειν (teínein), τόνος (tónos), τονικός (tonikós) isotonic, monotone, tone
top- place, location Greek τόπος (tópos) atopic, atopy, dystopia, ectopia, ectopic, entopic, epitope, eutopia, isotope, nomotopic, polytope, topiary, topic, topography, topology, toponomastics, toponym, toponymy, topos, utopia, zonotope
torn- turn, rotate Latin from Greek tornare < τόρνος (tórnos) tornado, tournament, turn
torpe- be numb Latin torpere torpent, torpid, torpor
torqu-, tort- twist Latin torquere, tortus contort, distort, extort, extortion, retort, torque, torsion, tortuous, torture
tot- all, whole Latin totus subtotal, total, totality
tox- arrow, bow, poison Greek τόξον (tókson) anatoxin, antitoxin, autotoxin, exotoxin, intoxicate, neurotoxin, psychotoxic, toxic, toxin, toxoid, toxology, toxoplasmosis
trab- beam Latin trabs, trabis trabeculae
trach- rough Greek τραχύς (trakhús) trachea, tracheids, tracheitis, tracheophyte, tracheostomy, tracheotomy, trachoma
trag- he-goat Greek τράγος (trágos) tragedy, tragic, tragus
trah-, tract- draw, pull Latin tractare, frequentative of trahere, tractus attract, contract, detract, retract, subtract, subtrahend, tractable, traction, tractor
trans-, tra-, tran- across Latin trans intransigent, tradition, transact, transcend, transient, transitory, transparent, transport
trapez- four-legged, table Greek τράπεζα (trápeza), τραπέζιον, (trapézion) trapeze, trapezium, trapezius, trapezohedron, trapezoid
traum- wound Greek τραῦμα, τραῦματος (traûma, traûmatos) trauma, traumatic, traumatize, traumatophobia
trecent- three hundred Latin trecenti trecentennial, trecentillion
trech-, troch- run, wheel Greek τρέχειν (trékhein), τρεχόμενον, τρόχος (tróchos), τροχός, τροχοῦ (trochós), τρόχωσις, τροχαῖος (trochaîos), τροχαϊκός (trochaïkós), τροχοειδής ditrochee, epitrochoid, hypotrochoid, trochaic, trochanter, trochee, trochelminth, trochlea, trochophore, trochoid
tredec- thirteen Latin tredecim tredecimal
treiskaidek- thirteen Greek τρεισκαίδεκα (treiskaídeka) triskaidekaphobia
trem- tremble Latin tremere tremor
trema- hole Greek τετραίνω, τρῆμα (trêma) monotrematous, monotreme, trema, tréma, trematode
trep-, trop- turn Greek τρέπειν (trépein), τρέψις (trépsis), τρόπος, τρόπου (trópos), τροπή, τροπῆς (tropḗ), τροπικός (tropikós) allotrope, anisotropy, Atropos, ectropion, entropic, entropion, entropy, heliotropism, isentropic, isotrope, isotropic, isotropy, pleiotropic, pleiotropy, polytrope, protrepsis, protreptic, psychotropic, treponeme, treponematosis, treponemiasis, trope, tropic, tropism, tropopause, troposphere, trove
treph-, troph- feed, grow Greek τρέφειν (tréphein), τροφός (trophós), τροφή (trophḗ), θρέμμα amyotrophic, atrophy, autotroph, auxotrophy, chemolithoautotroph, dystrophy, hemidystrophy, heterotroph, hypertrophy, lithoautotroph, lithotroph, mixotroph, organotroph, phagotrophy, photoheterotroph, phototroph, phototrophic, phototrophy, pogonotrophy, poliodystrophy, prototrophy, trophectoderm, trophic, trophobiosis, trophobiotic, trophoblast, trophoblastic, trophozoite
trepid- tremble Latin trepidare "to tremble, hurry", from trepidus "alarmed, scared" intrepid, trepid, trepidation
tri- three Greek τρεῖς, τρία (tría), τριάς atritonic, triad, triadic, Triassic, tricycle, trigon, triode, tripod, trisyllabic, tritonic
tri- three Latin trēs triangle, triumvirate, trivia
trib-, tript- rub Greek τρίβειν (tríbein), τριπτός, τρῖψις diatribe, tribochromism, tribology, trypsin, tryptic
tribu- pay Latin tribuere "to pay", from tribus attribute, contribute, retribution, tribe, tribulation, tribunal, tribune, tributary, tribute
tricen- thirty each Latin triceni tricenary
tricesim-, trigesim- thirtieth Latin tricesimus trigesimal
trich- hair Greek θρίξ, τριχός (trikhós) peritrichous, trichopathophobia, Trichoptera
trin- three each Latin trini trinary, trine, trinity
trit- third Greek τρίτος (trítos) tritagonist, tritanomaly, tritanopia, trite, tritium
tritic- wheat Latin triticum triticale
troch- wheel Greek τροχός (trokhós) trochlea
trop- turn Greek τρόπος (tropos) contrive, heliotropism, isotrope, psychotropic, retrieve, trope, tropic, tropism, troposphere, troubadour, trove
troph- feed, grow Greek τροφή, τροφός (trophós) dystrophy, pogonotrophy, trophic
truc- fierce Latin trux, trucis truculent
trud-, trus- thrust Latin trudere, trusus abstrude, abstruse, abstrusion, abstrusity, detrude, detrusion, detrusor, extrude, extrusible, extrusion, extrusive, inobtrusive, intrude, intrusion, intrusive, nonintrusive, obtrude, obtrusion, obtrusive, protrude, protrudent, protrusile, protrusion, protrusive, retrude, retruse, retrusion, retrusive
trunc- cut off Latin truncare "to maim, mutilate", from truncus "mutilated, cut off" trench, trenchant, truncate, truncheon, trunk
tryp- bore Greek τρυπᾶν (trupân), τρύπανον (trúpanon) trepan, trypanophobia, trypanosome
tum- be swollen Latin tumere detumescence, detumescent, intumescence, tumefacient, tumefaction, tumesce, tumescence, tumescent, tumid, tumidity, tumor, tumorous, tumular, tumulose, tumulous, tumult, tumultuary, tumultuous, tumulus
turb- disturb Latin turba disturb, disturbance, nonperturbative, perturb, perturbance, perturbation, perturbative, trouble, troublous, turbid, turbidity, turbinate, turbine, turbulence, turbulent
tuss- cough Latin tussis, tussire pertussis, tussive
tymb- mound Greek τύμβος (túmbos), τυμβεύω, τύμβευμα entomb, tomb
tympan- drum Greek τύμπανον (túmpanon) timbre, timpanist, tympani, tympanum
typ- stamp, model Greek τύπτειν (túptein), τύπος (túpos), τυπικός (tupikós), τύμπανον (túmpanon) allotype, archetype, ecotype, ectype, epitype, ergatotype, heterotype, heterotypic, holotype, homeotypic, homotype, homotypic, isosyntype, isotype, lectotype, logotype, monotypic, neotype, paralectotype, paratype, phenotype, prototype, schizotypic, syntype, type, typography, typology
typh- smoke Greek τύφειν (túphein), τῦφος (tûphos), τυφώδης typhoid, typhous, typhus
tyrann- terrible, tyrant Greek τύραννος (túrannos) tyrannize, tyrannosaurus, tyranny, tyrant
uber- fruitful, udder Latin ūber, uberare exuberance, exuberant, exuberate, uberous, uberty
uligin- in marshes Latin uligo, uliginis uliginous
ul- gums Greek οὖλον (oûlon) ulorrhea
ul- woolly Greek οὖλος (oûlos) Ulotrichi
ultim- farthest Latin ultimus ultimate, ultimatum
ultra- beyond Latin ultra ultrasonic
umbilic- navel Latin umbilicus umbilical, umbilicate, umbilication
umbr- shade, shadow Latin umbra adumbral, adumbrant, adumbrate, adumbration, adumbrative, antumbra, inumbrate, obumbrant, obumbrate, obumbration, penumbra, penumbral, somber, sombrero, subumbellate, umbel, umbellate, umbelliferous, umbelliform, umbellulate, umbellule, umber, umbra, umbraculum, umbrage, umbrageous, umbral, umbrella, umbriferous, umbrose
un- one Latin ūnus, unius adunation, biunique, coadunate, coadunation, disunite, disunity, malunion, nonuniform, nonuniformity, nonunion, nonunique, nonunity, onion, reunification, reunion, reunite, triune, unanimous, unary, unate, unicorn, unific, unification, uniform, uniformity, unify, union, unique, unite, unity, universal, universe, university
unc- hook Latin uncus adunc, aduncity, aduncous, unciform, Uncinaria, uncinate, Uncinia
unci- ounce, twelfth Latin uncia inch, ounce, quincuncial, semiuncial, uncial
und- wave Latin unda abound, abundance, abundant, inundant, inundate, inundation, redound, redundancy, redundant, superabound, superabundance, superabundant, surround, undine, undulant, undulate, undulation, undulatory, undulatus, undulose
undecim- eleventh Latin undecimus undecimal
unden- eleven each Latin ūndēni undenary
ungu- claw, hoof, nail Latin unguis, ungula ungual, unguiferous, unguiform, ungular, ungulate, unguligrade
ur- tail Greek οὐρά, οὐρᾶς (ourá, ourâs) anthurium, Anura, brachyurous, colure, cynosure, Diplura, Protura, uroborus, urochord, uroid, uropod
ur- urine Greek οὐρεῖν (oureîn), οὖρον, οὔρου (oûron, oúrou), οὔρησις (oúrēsis), οὐρητήρ (ourētḗr), οὐρήθρα (ourḗthra) antidiuretic, cystinuria, diuresis, diuretic, dysuria, enuresis, homocystinuria, lithuresis, polyurea, polyuria, strangury, uraemia/uremia, urea, uremic, uresiesthesia, uresis, ureter, ureteroscopy, urethra, urology
uran- heaven, sky Greek οὐρανός, οὐρανοῦ (ouranós, ouranoû), οὐρανόθεν (ouranóthen) uraninite, uranium, uranography, uranology, uranometry, uranophobia, Uranus
urb- city Latin urbs, urbis conurbation, exurb, exurban, interurban, inurbane, inurbanity, nonurban, suburb, suburban, suburbanite, urban, urbane, urbanity
urg- work Latin from Greek urgere urgency, urgent
urs- bear Latin ursus Ursa Major, ursine, Ursus
ut-, us- use Latin uti, usus abuse, disuse, use, usual, utilitarian, utility
uv- grape Latin uva uvea
uxor- wife Latin uxor uxoricide
vac- empty Latin vacare evacuate, vacancy, vacant, vacate, vacation, vacuous, vacuum
vacc- cow Latin vacca vaccary, vaccination, vaccine
vacil- waver Latin vacillare "sway, be untrustworthy" vacillate, vacillation
vad-, vas- go Latin vadere evade, pervasive
vag- wander Latin vagus, vagare vagabond, vague
val- strength, worth Latin valere ambivalence, avail, equivalent, evaluate, prevail, valence, valiant, valid, valor, value
van- empty, vain, idle Latin vanus "empty", also vanescere "vanish" evanescent, vain, vanish, vanity
vap- lack (of) Latin vapor evaporate, evaporation, evaporative, evaporator, evaporite, nonevaporative, vapid, vapidity, vapor, vaporescence, vaporescent, vaporific, vaporous
vari- vary Latin variare bivariate, covariate, covariation, intervarietal, invariable, invariance, invariant, variable, variance, variant, variate, variation, variegate, varietal, variety, variola, variolation, variorum, various, vary
varic- straddle Latin varicare "to straddle", from varus "bowlegged" prevaricate
veh-, vect- carry Latin vehere "to carry", vectus invective, inveigh, vector, vehement, vehicle
vel- veil Latin velum revelation, velate
vell-, vuls- pull Latin vellere, vulsus convulsion
veloc- quick Latin velox, velocis velocity
ven- vein Latin vena intravenous, venosity, venule
ven- hunt Latin venari venison
ven-, vent- come Latin venire advent, adventure, avenue, circumvent, contravene, convene, convenient, convention, event, intervene, intervention, invent, prevent, revenue, souvenir, supervene, venue, venture
vend- sell Latin vendere vend, vendor
vener- respectful Latin venus, veneris venerable, veneration, venereal
vent- wind Latin ventus ventilation, ventilator
ventr- belly Latin venter, ventris ventral
ver- true Latin verus aver, veracious, verdict, verify, verisimilar, verisimilitude, verity, very
verb- word Latin verbum verbal, verbatim, verbosity
verber- whip Latin verber reverberation
verm- worm Latin vermis vermiform, vermin
vern- spring Latin ver, vernus vernal
vers-, vert- turn Latin versus, past participle of vertere adverse, adversity, advertise, anniversary, avert, controversy, controvert, conversant, conversation, converse, convert, diversify, divert, extrovert, introvert, inverse, invert, perverse, pervert, reverse, revert, subvert, tergiversate, transverse, universe, versatile, verse, version, versus, vertex, vertical, vertigo
vesic- bladder Latin vesica vesical
vesper- evening, western Latin vespera vesperal
vest- clothing, garment Latin vestire "to clothe", related to vestis "garment" divest, invest, investiture, transvestite, travesty, vest, vestment
vestig- track Latin vestigium investigate, vestigial
vet- forbid Latin vetare veto
veter- old Latin vetus, veteris inveterate, veteran
vi- way Latin via deviate, obviate, obvious, via
vic- change Latin vicis vicar, vicarious, vice versa, vicissitude
vicen-, vigen- twenty each Latin viceni vicenary
vicesim-, vigesim- twentieth Latin vicesimus vicesimary, vicesimation, vigesimal
vid-, vis- see Latin videre, visus advice, advisable, advise, advisement, advisor, advisory, clairvoyance, clairvoyant, counterview, enviable, envious, envisage, envisagement, envision, envy, evidence, evident, evidential, evidentiality, evidentiary, improvidence, improvident, improvisation, improvisational, improvise, imprudence, imprudent, inadvisable, inevident, interview, interviewee, invidious, invisibility, invisible, nonevidentiary, nonsupervisory, nonvisual, preview, previse, provide, providence, provident, provision, provisional, provisionality, proviso, provisory, prudence, prudent, prudential, purvey, purveyance, purveyor, purview, review, reviewal, revisal, revise, revision, revisionary, revisit, supervise, supervision, supervisor, supervisory, survey, surveyor, surview, survise, videlicet, video, view, vis-à-vis, visa, visage, visibility, visible, vision, visionary, visit, visitation, visor, vista, visual, visuality, voilà, voyeur
vigil- watchful Latin vigil, also vigilare invigilate, reveille, surveillance, vigil, vigilance, vigilant, vigilante
vil- cheap Latin vilis revile, vile, vilify
vill- country house Latin villa villa, village, villain
vill- shaggy hair Latin villus intervillous, velour, velvet, villiform, villose, villosity, villous, villus
vin- wine Latin vinum vigneron, vignette, vinaceous, vinaigrette, vine, vineal, vinegar, viniculture, vinosity, vinous
vinc-, vict- conquer Latin vincere (past participle victus) convict, conviction, convince, evict, evince, invincible, province, vanquish, vanquishment, victor, victorious, victory
vir- man Latin vir decemvir, decemvirate, duumvirate, quadrumvirate, septemvir, septemvirate, triumvir, triumvirate, vigintivirate, virago, virile, virilescence, virility, virilocal, virilocality, virtual, virtuality, virtue, virtuosity, virtuoso, virtuous
vir- green Latin virere verdure, virid, viridescent, viridian, viridity
vir- poison, venom Latin vīrus retroviral, retrovirus, rotavirus, togavirus, viral, virality, viricidal, viricide, virucidal, virucide, virulence, virulent, virus
virg- rod, twig Latin virga virga, virgate, virgula, virgularian, virgulate, virgule
virgin- maiden Latin virgō, virginis virgin, virginal, virginity, Virgoan
visc- thick Latin viscum viscosity
viscer- internal organ Latin viscus, visceris eviscerate, visceral
vit- life Latin vita vital, vitality, vitamin
vitell- yolk Latin vitellus vitellogenesis
viti- fault Latin vitium vice, vitiate, vituperate
vitr- glass Latin vitrum vitreous, vitriol
viv- live Latin vivere "to live", related to vita "life" convivial, revive, survive, viable, victual, vivacious, vivacity, vivid, vivisection
voc- call, voice Latin vocare (to call), from vox "voice" (genitive vocis) advocacy, advocate, advocation, advocator, advocatory, advoke, advowson, avocation, avouch, avow, avowal, avowry, convocate, convocation, convocator, convoke, disavow, disavowal, equivocal, equivocate, equivocation, evocable, evocation, evocative, evocator, evoke, invocable, invocate, invocation, invocative, invocator, invoke, prevocational, provocate, provocateur, provocation, provocative, provocator, provoke, reavow, reinvoke, revocable, revocation, revoke, vocabulary, vocal, vocation, vocational, vociferous, vouch, vouchee, voucher, vouchsafe
vol- fly Latin volare avolation, circumvolant, circumvolation, nonvolatile, volatile, volatility, volitant, volitation
vol- will Latin voluntas "will" from velle "to wish" benevolence, benevolent, involuntary, malevolence, malevolent, omnibenevolence, velleity, volitient, volition, volitional, volitive, voluntary, Voluntaryism, volunteer, voluptuary, voluptuous
volv-, volut- roll Latin volvere, volutus advolution, archivolt, circumvolute, circumvolution, circumvolve, coevolution, coevolutionary, coevolve, convolute, convolution, devolve, evolve, involve, revolve, valve, vault, volte, voluble, volume, voluminous, volva, Volvox, volvulus, voussoir, vulva
vom- discharge Latin vomere vomit, vomition, vomitory, vomitus
vor-, vorac- swallow Latin vorare, vorax carnivore, carnivorous, devoration, devoré, devour, herbivore, herbivorous, locavore, omnivore, omnivorous, voracious, voracity, voraginous
vov-, vot- vow Latin vovere, votus devote, devotee, devotion, devotional, devout, devove, devow, votary, vote, votive, vow
vulg- crowd Latin vulgus divulge, vulgarity, vulgate
vulner- wound Latin vulnus, vulneris vulnerable
vulp- fox Latin vulpēs, vulpis vulpine
xanth- yellow Greek ξανθός (ksanthós), ξανθότης (ksanthótēs) "yellowness" axanthism, heteroxanthine, xanthan, xanthelasma, xanthic, xanthine, Xanthippe, xanthium, xanthochromia, xanthochromism, xanthogenic, Xanthoidea, xanthoma, xanthomatosis, xanthophobia, xanthophore, xanthophyll, xanthopsia, xanthopterin, xanthosis, xanthous
xe- scrape, shave Greek ξεῖν/ξέειν (kséein), ξέσις (ksésis), ξέσμα (ksésma) arthroxesis
xei-, xi- ks Greek Ξ, ξ, ξεῖ/ξῖ xi
xen- foreign Greek ξένϝος, ξένος (ksénos), ξενικός, ξενία (ksenía) axenic, Xenarthra, xenia, xenic, xenobiotic, xenoblast, xenogamy, xenograft, xenology, xenon, xenophobia
xer- dry Greek ξηρός (ksērós), ξηρότης (ksērótēs) elixir, xerasia, xerochilia, xeroderma, xerography, xeromorph, xerophagy, xerophile, xerophthalmia, xerophyte, xerosis
xiph- sword Greek ξίφος (ksíphos) xiphisternum, xiphoid, xiphopagus, xiphophyllous
xyl- wood Greek ξύλον (ksúlon) metaxylem, protoxylem, xylem, xylene, xylitol, xylocarp, Xylocarpus, xyloid, xylophagous, xylophobia, xylophone, xylostroma
ze- boil Greek ζεῖν (zeîn), ζεστός (zestós), ζέσις, ζέμα, ζέματος (zéma, zématos) eczema, eczematous
zel- jealousy, zeal Greek ζῆλος (zêlos), ζηλωτής, ζηλωτοῦ (zēlōtḗs) zeal, zealot, zealous
zephyr- west wind Greek Ζέφυρος (Zéphuros) zephyr
zet- Z, z Greek Ζ, ζ, ζῆτα (zêta) zed, zeta
zete- seek Greek ζητεῖν (zēteîn), ζητητός (zētētós), ζητητικός (zētētikós) zetetic
zizyph- jujube Greek ζίζυφον (zízuphon) Ziziphus
zo- animal, living being Greek ζῶ, ζῷον (zōîon) anthrozoology, azoic, azotemia, cryptozoology, ectozoon, entozoon, epizoon, Eumetazoa, Mesozoic, Metazoa, protozoa, zoanthropy, zodiac, zoic, zoo, zoochore, zoogamete, zoogeography, zooid/zoöid, zoologic, zoology, zoomorphism, zoon, zoonosis, zoophagy, zoopoetics, zoospore, zootoxin, zooxanthella
zon- belt, girdle Greek ζωννύναι (zōnnúnai), ζώνη (zṓnē), ζωστήρ (zōstḗr), ζῶστρον phylozone, zonal, zone, zonohedron, zonotope, zoster
zyg- yoke Greek ζευγνύναι (zeugnúnai), ζεῦγμα (zeûgma), ζυγωτός (zugōtós), ζυγός, ζυγόν (zugón) azygous, diazeugma, dizygotic, heterozygote, heterozygous, hyperzeuxis, hypozeugma, hypozeuxis, mesozeugma, monozygotic, prozeugma, synezeugmenon, zeugitae, zeugma, zygoma, zygomorphic, zygomorphism, zygomycosis, zygomycota, zygon, Zygoptera, zygote
zym- ferment Greek ζέω, ζύμη (zúmē) alloenzyme, azyme, azymite, enzyme, lysozyme, microzyme, zymase, zyme, zymogen, zymology, zymolysis, zymosis, zymotic, zymurgy


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