| root | meaning | origin | examples |
|---|
| axon- | axis, axle | ἄξων, ἄξονος (áxōn, áxonos) | axon , axonography , axonometric |
| axi- | merit | ἄξιος (áxios) "worth", ἀξίωμα (axíōma) | axiology , axiom , axiomatic |
| axi- | axis | axis | axis , axisymmetry |
| avi-, au- | bird | avis | auspice , auspicious , avian , aviary , aviation , aviator |
| av- | desire | avere "crave, long for" | avarice , avaricious , avarous , ave , avid , avidity |
| aut-, auto- | self; directed from within | αὐτός (autós) "self", "same" | autarchy , authentic , autism , autocracy , autograph , automatic , autonomy |
| auri-, aus- | relating to the ear | auris "ear" | aural , auricle , aurinasal , auscultate , auscultation |
| aur- | relating to gold, or gold-colored | aurum "gold" | aureate , aureole |
| aug-, auct- | grow, increase | augēre, auctus "to increase" | auction , augend , augment , augmentation , augur , augury , august , author , auxiliary , inauguration |
| audi- | hearing, listening, sound | audire "to hear" | audible , audio , audiology , audit , audition , auditorium , auditory |
| audac- | daring | audax "brave, bold, daring", from audere "to dare" | audacious , audacity |
| athl- | prize | ἆθλος (áthlos) "contest, feat", ἄεθλος | athlete , athletic , decathlon , pentathlon , triathlon |
| aster-, astr- | star, star-shaped | ἀστήρ, ἀστέρος (astḗr, astéros), ἄστρον (ástron) "star" | aster , asterisk , asteroid , astrology , astronomy , astronaut , diasterism geaster , monaster |
| asper- | rough | asper "rough" | asperity , exasperate |
| asin- | ass | asinus | asinine , ass , easel |
| arthr- | joint | ἄρθρον (árthron) | arthritic , arthritis , arthropod , arthroscopic , arthrosis |
| art- | art, skill | ars, artis | artifact , artifice , artificial , artificiality , artisan , inert , inertia |
| arist- | excellence | ἄριστος (áristos) | aristocracy , aristocrat |
| arid- | be dry | ārēre "be dry or parched" | arid |
| argent- | silver | argentum | argent , Argentina |
| aret- | virtue | ἀρετή (aretḗ) | aretaic , arete |
| ardu- | difficult | arduus "high, steep" | arduous |
| ard- | heat, glow, passion | ardere "to burn", arsus | ardent , ardor , arson |
| arct- | Relating to the North Pole or the region near it; relating to cold | ἄρκτος (árktos) "bear", ἀρκτικός (arktikós) | Antarctic , arctic , Arctic Ocean , palearctic |
| archae-, arche- | ancient | ἀρχαῖος (arkhaîos) "ancient" from ἀρχή (arkhḗ) "beginning" | archaeology , archaic , archaism |
| arch-, arche-, archi- | ruler | ἄρχειν (árchein), ἄρχων (árchōn), ἀρχή (archḗ) "rule" (in compounds: ἀρχε-, ἀρχι-) | anarchy , archangel , archetype , architect , archon , autarchism , autarchy , exarch , monarchy , oligarchy , patriarchy , polyarchy , synarchy , triarchy |
| arcan- | box | arcanus | arcane , arcanum |
| arbit- | judge | arbiter (from ad "to" + baetere "to come, go") | arbiter , arbitrage , arbitrary , arbitration |
| ara- | plow, till | ărāre | arable |
| aqu-, aqua-, aque-, aqui- | water | aqua | aquamarine , aquarium , aqueduct , aquifer |
| aper- | open | aperire | aperient , apéritif , aperitive , aperture , overt , overture , pert |
| ap-, apo- | away from, separate, at the farthest point | ἀπό (apó) "from, away, un-, quite" | aphelion , apocrine , apocryphal , apogee , aporrhinosis , apostasy , apostate |
| anthrop- | human | ἄνθρωπος (ánthrōpos) "man" | anthropology , anthroposophy , anthropomorphic , misanthrope , philanthropy |
| anthrac- | coal | ἄνθραξ, ἄνθρακος (ánthraks, ánthrakos) | anthracite , anthracycline , anthrax |
| anth- | flower | ἄνθος (ánthos) | anther , anthology |
| ante-, anti- 4 | before, in front of, prior to; old | ante "before", "against"; see also antiquus "old" | antebellum , antediluvian , anticipate , antiquarian , antiquated , antique , antiquity |
| ant-, anti- | against, opposed to, preventive | ἀντί (antí) "against" | antagonist , antagonize , antibiotic , antipodes , antirrhinum |
| ann-, -enn- | year, yearly | annus "year" | anniversary , annual , centennial , millennium , perennial |
| anim- | breath, life, spirit | anima "breath" | animal , animation |
| anem- | wind | ἄνεμος (ánemos) | anemograph , anemometer , anemone , anemophilous , anemophobia , anemotropism |
| andr- (ΑΝΕΡ3) | male, masculine | ἀνήρ, ἀνδρός (anḗr, andrós) | androgen , android , polyandrous , polyandry |
| ana-, am-, an- | again, against, back, up | ἀνά (aná) | anabaptist , anaphylaxis , anarrhexis , anion , anode |
| an-, a-, am-, ar- | not, without | Greek ἀν-/ἀ- "not" | anaerobic , anhydrous , ambrosia , arrhythmia , atheism , atypical |
| ampl- | ample, abundant, bountiful, large | amplus | ample , amplify , amplitude |
| amph-, amphi- | both, on both sides of, both kinds | ἀμφί (amphí) "on both sides" | amphibian , amphibolic , amphitheatre , amphoterism |
| ami-, amic-, imic- | friend | amicus | amiable , amicable , amity , enemy , enmity , inimical |
| ambul- | to walk | ambulare | ambulance , ambulatory , preamble |
| ambi-, am-, amb-, ambo-, an- | both, on both sides | ambi | ambidexterity , ambient , ambiguous , ambit , ambition , ambivalent , amboceptor , amputation , ancipital , andante |
| am-, amat- | love, liking | amāre, amatus, amor | amateur , amatory , amenity , amoration , amorous , enamoured |
| alt- | high, deep | altus, altitudo | altimeter , altitude |
| all- | other | ἄλλος (állos) | allograph , allophone , parallax |
| ali-, alter- | other | alius | alias , alibi , alien , alter , alternate , altruism |
| alg- | pain | ἄλγος (álgos), ἀλγεινός, ἀλγεῖν (algeîn), ἄλγησις (álgēsis) | analgesic , arthralgia , neuralgia |
| alb- | dull white | albus | albedo , albino , albumen |
| alac- | cheerful | alacer | alacrity , allegro |
| agro- | field | ἀγρός (agrós) | agroforestry , agronomy |
| agri-, -egri- | field | ager, agris "field, country" | agriculture , peregrine |
| ag-, -ig-, act- | do, go, move | agere, actus | act , action , agenda , agent , agile , agitate , ambiguous , castigate , cogent , cogitate , cogitation , excogitate , mitigate , navigate |
| ag-, -agogue | lead | ἄγειν (ágein) (cognate with Latin agere), ἀγωγός (agōgós) | agony , antagonist , antagonize , demagogue , pedagogue , pedagogy , strategy , synagogue |
| aev-, ev- | age | aevum | age , coeval , eon , eternal , longevity , medieval , primeval |
| aether-, ether- | upper pure, bright air | αἴθειν (aíthein), αἰθήρ (aithḗr) | ether , ethereal , etheric , hypaethros |
| aesth- | feeling, sensation | αἰσθητός (aisthētós), αἰσθητικός (aisthētikós) "of sense perception" from αἰσθάνεσθαι (aisthánesthai) "to perceive" | aesthesia , aesthesis , aesthete , aesthetics , anaesthetic , synesthesia |
| aero- | air, atmosphere | ἀήρ, ἀέρος (āḗr, āéros) "air" | aerobic , aerodynamic , aeronautics , aeroplane , aerorrhachia , aerosol , aerotitis |
| adip- | fat | adeps, adipis "fat" | adipocellular , adipose |
| ad-, a-, ac-, af-, ag-, al-, am-, an-, ap-, ar-, as-, at- 2 | movement to or toward; in addition to | ad "to", "toward" | accept , accurate , adapt , affect , agglomerate , aggrandize , aggregate , aggression , annectent , approximate , ascend |
| acu-, acut- | sharp, pointed | acutus, past participle of acuere "to sharpen", from acus "needle" | acerose , acupuncture , acute , acutifoliate |
| acr- | height, summit, tip | ἄκρος (ákros) "high", "extreme" | acrobatics , acromegaly , acronym , acrophobia , acropolis , acrostic |
| acid- | acidic, sour | acidus | acidiferous , acidity , acidosis , acidulation , acidulous |
| acet- | sour, vinegar | acetum | acetate , acetic , acetone , acetum |
| acer-, acri- | bitter, sharp, sour | acer, acris, acerbus, acere | acerbic , acrid , acrimony , exacerbate |
| ab-, a-, abs-, au- 1 | away from | ab | abnormal , abrasion , absent , abstain , abstraction , auference , aversion |
| bac- | rod-shaped | baculum | baculiform , baculum , bacteria |
| bal-, bel-, bol- (ΒΑΛ5) | throw | βάλλειν (bállein), βολή (bolḗ), βλῆμα (blêma) | anabolic , anabolism , ball , ballista , ballistic , ballistospore , belomancy , belonephobia , bolide , catabolic , catabolism , devil , diabolic , emblem , emblematic , embolic , embolism , embolus , holometabolism , hyperbole , metabolism , parable , parabola , paraboloid , parle , parley , problem , problematic , symbol , symbolic , symbolism , taurobolium , thromboembolism |
| bapt- (ΒΑΦ6) | dip | βάπτειν (báptein), βάμμα (bámma) | abaptiston , Anabaptist , baptism , baptize |
| bar- | weight, pressure | βαρύς (barús/barýs), βάρος (báros) | barograph , barometer , barostat , barycentre , barycentric , baryogenesis , baryon , barysphere , baryton , barytone , hyperbaric , hypobaric , isobaric |
| basi-, bas- | at the bottom | βάσις (básis) "step", from βαίνειν (baínein), "I walk, march" | base , basic , basis , basicranial , basioglossal , basirrhinal , basommatophoric , basolateral , debase |
| bath- | deep, depth | βαθύς (bathús/bathýs), βάθος (báthos) | batholith , bathophobia , bathos , bathymetry , bathyscaphe , bathysphere , isobathic |
| be-, beat- | bless | beare, beatus | beatification |
| bell-, belli- | war | bellum, belli | antebellum , bellicose , belligerent , rebellion |
| ben- | good, well | bene (adverb) | beneficence , benefit , benevolent , benign , benignant , benignity |
| bi-, bin-, bis- | two | bis, "twice"; bini, "in twos" | bicycle , biennial , bifocal , bigamy , binary , binoculars , biscotti |
| bib- | drink | bibere, bibitus | bib , beer , beverage , imbibe |
| bibl- | book | βίβλος (bíblos), βιβλίον (biblíon) "book" | bible , bibliography |
| bio-, bi- | life | βιοῦν (bioûn), βίος (bíos) "life", βιωτός (biōtós), βιωτικός (biōtikós), βίωσις (bíōsis) | biodiversity , biography , biohazard , biology , biome , biometric , biosphere |
| blast- | germ, embryo, bud, cell with nucleus | βλαστάνειν (blastánein), "I put forth shoots", βλαστός (blastós), βλάστημα (blástēma) | blastema , blastochyle , blastocoele , blastula , ectoblast , endoblast , entoblast , fibroblast , osteoblast , sideroblast |
| blenn- | slime | βλέννος (blénnos) | blennadenitis , blennophobia , blennosperma , blennorrhagia |
| bon- | good | bonus | bonify , bonitary |
| bore- | north | borealis "northern" from Βορέας (Boreas) "the north wind" | borealis |
| botan- | plant | βοτάνη, βότανον (botánē, bótanon), βοτανικός | botanic , botanist , botanology , botany |
| bov-, bu- | cow, ox | bos (genitive bovis) "ox, cow" | beef , boor , bovine , bucinator muscle |
| brachi-, brachio- | arm | bracchium | brachiferous , brachial artery , brachiocubital |
| brachi-, brachio-, brachion-, brachioni- | arm | βραχίων (brakhíōn) | brachialgia , brachionerysipelas , brachionigraph , brachiorrhachidian , brachiosaurus |
| brachy- | short | βραχύς (brakhús, brakhýs) | brachistochrone , brachycephaly , brachydactyly |
| brady-, bradys- | slow | βραδύς (bradús, bradýs), βράδος (brádos) | bradycardia , bradysuria , bradytelic |
| branchi- | gill | βράγχιον (brágkhion, bránkhion) | branchiopneustic , branchiopod , nudibranch |
| brev- | brief, short (time) | brevis, breviare | abbreviate , brevextensor , brevicaudate , brevity , brief |
| bromat-, bromato-, broma-, bromo- | food | βρῶμα (brōma) | bromatium , bromateccrisis , bromatherapy , bromatology , bromography |
| brom- | oats | βρόμος, βρόμη (brómos, brómē) "oats" | brome , Bromus , Bromus ramosus |
| brom- | stench | βρῶμος (brōmos) "stench, clangor" | bromate , bromide , bromine |
| bronch- | windpipe | βρόγχος (brógkhos, brónkhos) | bronchiole , bronchitis , bronchopneumonia , bronchus |
| bront-, bronto- | thunder | βροντή (brontḗ) | Brontosaurus , brontology , brontophobia |
| bucc- | cheek, mouth, cavity | bucca | buccal , buccilingual , buccolingual |
| bulb- | bulbous | bulbus | bulbiform , bulbiparous , bulboartrial , bulborrhexis , bulbous , bulbule |
| bull- | bubble, flask | bullire, bulla | bullectomy , bulliferous , ebullient , ebullism |
| burs- | pouch, purse | bursa | bursa , bursalogy , bursar , bursary , bursectomy , bursiform , disburse |
| cac-, kak- | bad | κακός (kakós), κάκιστος (kákistos) | cachexia , cacodemon , cacography , cacophony , cacorrhacitis , kakistocracy |
| cad-, -cid-, cas- | fall | cadere, casus | accident , cadaver , cadence , cascade , case , recidivism |
| caed, -cid-, caes-, -cis- | cut, kill | caedere, caesus | caesura , excise , germicide , homicide , incisor , scissors |
| cal-, call- | beautiful | καλός (kalós) "beautiful"; κάλλος (kállos) "beauty", κάλλιστος (kállistos) | calisthenics , calligraphy , Callista , Callisto , calophyllous , kaleidoscope |
| cal- | call | calare | calendar , claim , class , conciliate , conciliatory , council , intercalate , nomenclature |
| cal- | heat | 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 | from Latin calx (genitive calcis) "lime", from Greek χάλιξ (khalix) "pebble", "limestone" | calcite , calcitrant , calcium , calculate , calculus , chalicothere , chalk , recalcitrant |
| cale-, cle- | call | καλέειν/καλεῖν (kaléein/kaleîn), κλῆσις (klēsis), κλητός (klētós) | ecclesia , Ecclesiastes , ecclesiastic , ecclesiology , ecclesiophobia , epiclesis , paraclete |
| calv-, calum- | trick, lie, deceive | calumnia "slander, trickery", from calvi "to trick, deceive" | calumnious , calumny , cavil , challenge |
| calyp- | cover | καλύπτειν (kalúptein), καλυπτός (kaluptós), κάλυξ (kálux) | apocalypse , calyx , epicalyx , eucalyptus |
| camer- | vault | camera | antechamber , bicameral , camaraderie , camber , camera , chamber , chamberlain , comrade , concamerate , concameration , multicamera , tricameral , unicameral |
| camis- | shirt | camīsa | camisade , camisado , Camisard , camisole , chemise |
| camp- | field | campus "field", "level ground" | camp , campaign , campesino , campestral , campicolous , campimetry , campsite , campus , champion , decamp , encamp , encampment |
| can- | dog | canis | canaille , canary , canicule , canid , canine , Canis , Canis Major |
| can- | reed, rod | κάννα (kánna), κανών (kanṓn) | cane , canister , canon , canonic |
| can-, -cin-, cant- | sing | cantare frequentative of canere | accent , cantata , canto , cantor , chant , enchant , recant |
| cand-, cend- | glowing, iridescent | candere "to be white or glisten" | candela , candid , candle , candor , incandescent , incendiary , incense |
| cap-, -cip-, capt-, -cept- | hold, take | 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 | 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 |
| capr- | goat | caper (genitive capri) "goat", also capreolus "wild goat" | cab , caper , caprice , Capricorn , caprine |
| caps- | box, case | capsa | capsule |
| carbon- | coal | carbo, carbonis | arbonara , bicarbonate , carbon , carbonate , carbonation , Carboniferous , carbuncle , radiocarbon |
| carcer- | jail | carcer, carcerare, cancelli | chancel , chancellery , chancellor , chancery , incarcerate , incarceration , subchancel |
| carcin- | cancer (disease) | Latin from Greek καρκίνος (karkínos) "crab" | carcinogenic , carcinoma |
| cardi- | heart | καρδιά (kardía) | cardiac , cardiograph , cardioid , cardiology , cardiomyopathy , electrocardiogram , endocardium , epicardium , hemicardia , myocardium , pericardium |
| cardin- | hinge | cardo, cardinis | cardinal , cardinality , kern |
| carn- | flesh | 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 | καρπός (karpós) "fruit" | acarpous , angiocarpous , anisocarpic , Carpo , carpogonium , carpology , carpophagous , carpophore , carpospore , cystocarp , endocarp , epicarp , mesocarp , monocarpic , pericarp , polycarpic , procarp , pseudocarp |
| carp- | wrist | καρπός (karpós) "wrist" | carpal , carpal tunnel syndrome , carpus , metacarpus |
| cast- | pure, cut | castrare and castus, from kes- (to cut) | caste , castigate , castrate , chaste , chastity , incest |
| cata-, cat- | down, against, back | κατά (katá) "down, against, back" | catabolic , catacomb , catalyst , catarrhine , catastrophe , catatonia , cathode , cation |
| caten- | chain | catena | catenary , concatenation |
| cathar- | pure | καθαρός (katharós) | catharsis , cathartic |
| caud- | tail | cauda | caudal , coda |
| caus-, -cus- | cause or motive | causa | accuse , because , causal , causative , cause , excuse |
| caust-, caut- | burn | καίειν (kaíein), καυστός/καυτός (kaustós), καυστικός | calm , catacaustic , caustic , cauter , cauterize , cautery , diacaustic , holocaust , hypocaust |
| cav- | hollow | cavus | cave , cavity , excavation |
| ced-, cess- | move, yield, go, surrender | cedere, cessus | accede , cede , concede , precede , procedure , proceed , procession , recede , secede , succeed , success |
| cel- | hide | celare "to hide" | ceiling , clandestine , conceal , occult |
| celer- | quick | celer, celerare | acceleration , celerity |
| cen-, caen- | new | καινός (kainós) | caenogastropod , caenogenesis , Cenozoic |
| cen- | empty | κενός (kenós) | cenotaph , kenosis |
| cen-, coen- | common | κοινός (koinós) | cenobite , coenesthesia , coenocyte |
| cens- | to assess | censere | censure , census |
| cent- | hundred | centum | cent , centennial , centurion , percent |
| centen- | hundred each | centeni | centenarian , centenary |
| centesim- | hundredth | centesimus | centesimal , centesimation |
| centr- | center | κέντρον (kéntron) "needle", "spur" | eccentric |
| centri- | center | centrum | central , center , concentrate , concentric , centrifugal , centripetal |
| cephal- | head | 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 | κέραμος (keramos) | ceramic |
| cerat- | horn | κέρας (keras), κέρατος (keratos) | keratin , triceratops |
| cern-, cer- | sift | cernere "to sift, separate" | ascertain , certain , concern , concert , decree , discern , excrement , secern , secret |
| cervic- | relating to the neck, relating to the cervix | cervix, cervicis "neck" | cervix , cervical |
| ceter- | other | ceterus | et cetera |
| chir- | of the hand or hands | χείρ (kheir) "hand" | chiral , chiropractic , chiroptera |
| chelon- | relating to a turtle | χελώνη (khelōne) "tortoise" | chelonia |
| chlor- | green | χλωρός (khlōros) | chlorine , chlorophyll , chloroplast |
| chondr- | cartilage | χόνδρος (chondros) | hypochondriasis |
| chore- | relating to dance | χορεία (khoreia) "dancing in unison" from χορός (khoros) "chorus" | choreography , chorus |
| chord- | cord | chorda "rope" from χορδή (chordē) | chordata , cord |
| chrom- | color | χρῶμα (chrōma) | chromatic , chrome , chromium , chromosome , monochrome , polychrome |
| chron- | time | χρόνος (chronos) | anachronism , chronic , chronicle , chronology , chronometer , synchronize |
| chrys- | gold | χρυσός (khrusos) | chrysalis , chrysolite |
| cili- | eyelash | cilium | cilia , supercilious |
| ciner- | ash | cinis, cineris | incineration |
| cing-, cinct- | gird | cingere, cinctus | succinct |
| circ- | circle, ring | circulus, circus | circle , circular , circulate , circus |
| circum- | around | circum | circumcise , circumference , circumlocution , circumnavigate , circumscribe |
| cirr- | orange | κιρρός (kirros) | cirrhosis |
| cirr- | curl, tentacle | cirrus | cirrus |
| cit- | call, start | citare, frequentative of ciere | citation , cite , excite , incite , solicit , solicitous |
| civ- | citizen | civis | civic , civil , civilian , civility , civilization |
| clad- | branch | κλάδος (klados) | clade |
| clam- | cry out | clamare | acclaim , claim , clamor , exclamation , proclamation , reclamation |
| clar- | clear | clarus, clarare | clarity , clear , declaration |
| clast- | broken | κλαστός (klastos) | iconoclast , osteoclast |
| claud-, -clud-, claus-, -clus- | close, shut | claudere, clausus | clause , claustrophobia , conclude , exclude , exclusive , include , occlusion , occult , recluse , seclude |
| clav- | key | κλείς (kleis) "key" from κλείειν, (kleiein) "to close" | clavichord , clavicle , conclave |
| cleist- | closed | κλειστός (kleistos) | cleistogamy |
| cleithr- | bar, key | κλεῖϑρον (kleithron) | cleithrum |
| clement- | mild | clemens, clementis | clemency , inclement |
| clin- | bed | κλίνη (klinē) | clinic |
| clin- | lean, recline | -clinare | decline , declination , incline , inclination , recline |
| cochl- | snail, spiral shell | κόχλος (kochlos) | cochlea |
| coel- | hollow | κοῖλος (koilos) | blastocoel , coelom , spongocoel |
| col- | strain | colare, colum | colander , coulee , percolate |
| coll- | hill | collis | colliculus |
| coll- | neck | collum | accolade , collar |
| color- | color | color | coloration , coloratura , tricolor |
| comi- | friendly, kind | comis "courteous, kind" | comity |
| con-, co-, col-, com-, cor- | with, together | cum (from older form quom) | coagulate , collide , compress , connect , connote , contain , corrode , quondam |
| con- | cone | κῶνος (kōnos) | conic , conical , conoid |
| condi- | season | condire | condiment |
| contra- | against | contra | contraband , contraception , contradict , contraindicate , contrast , contravene |
| copi- | plenty | copia | copious , copy , cornucopia |
| copr- | dung | κόπρος (kópros) | coprolite , coprophagia , coprophilia |
| copul- | bond | copula "that which binds" | copula , copulation , couple |
| cor-, cord- | heart | cor, cordis | accord , cordial , core , concord , courage , discord , discordant , encourage , record |
| corac- | raven | κόραξ, κόρακος (korax, korakos) | coracoid |
| cori- | hide, leather | corium, corii | excoriate |
| corn- | horn | cornu | cornea , cornucopia , unicorn |
| coron- | crown | corona, coronare | corona , coronation |
| corp-, corpor- | body | corpus, corporis | corporation , corporal , corporeal , corpse , corpulent , corpuscle , incorporate |
| cortic- | bark | cortex, corticis | cortical |
| cosm- | universe | κόσμος (kosmos) | cosmic , cosmonaut , cosmopolitan , cosmos , microcosm |
| cosmet- | the art of dress and ornament | κοσμητική (kosmētikḗ) from κόσμος (kόsmos) | cosmetics , cosmetology |
| cost- | rib | costa | costal |
| cotyl- | cup | κοτύλη (kotulē) | cotyledon |
| crani- | skull | κρανίον (kranion) | cranium |
| crass- | thick | crassus | crassitude |
| crea- | make | creare, creatus | creation , creature , creole , procreation , recreation |
| cred- | believe, trust | credere, creditus | accreditation , credence , credentials , credibility , credible , credit , creditor , credo , credulity , credulous , creed , discredit , incredible , incredulous , miscreant , recreant |
| crep- | boot, shoe | κρηπίς, κρηπίδος (krēpis, krēpidos) | crepidoma |
| cresc- | grow, rise | crescere | accresce , accrescence , accrescent , accrete , accretion , accrue , concrete , crescendo , crescent , crew , decrease , increase , recruit , recruitment , surcrew |
| cribr- | sieve | cribrum, cribrare | cribble , cribrate |
| cric- | ring | κρίκος (krikos) | cricoid |
| crisp- | curled | crispus | crepe , crispate |
| crist- | crest | crista | cristate |
| crit-, crisi- | judge, separate | κρίνειν (krinein), κρίσις (krisis) | crisis , criterion , critic , critical , diacritic , endocrine , hypocrisy |
| cross- | fringe, tassel | κροσσός (krossos) | crossopterygii |
| cruc- | cross | crux, crucis | crucial , crucifix , crucify , excruciating |
| crur- | leg, shank | crus, cruris | crural |
| crypt- | hidden | κρύπτειν (kruptein) "to hide", κρυπτός (kruptos) | apocryphal , cryptic , cryptography |
| cten- | comb | κτείς, κτενός (kteis, ktenos) | ctenophore |
| cub- | cube | κύβος (kubos) | cubic , cuboid |
| cub- | lie | cubare | incubation , succuba |
| culin- | kitchen | culina | culinary |
| culp- | blame, fault | culpa | culpable , culprit , exculpate |
| cune- | wedge | cuneus | cuneiform |
| cur- | care for | cura, curare | accurate , curative , curator , cure , curious , manicure , pedicure , secure , sinecure |
| curr-, curs- | run, course | currere, cursus | concur , concurrent , corridor , courier , course , currency , current , cursive , cursor , cursory , discourse , excursion , incur , occur , recur , recursion , recursive , succor |
| curv- | bent | curvus "crooked, curved", from curvare "to bend" | cavort , curb , curvature , curve |
| cuspid- | lance, point | cuspis, cuspidis | bicuspid |
| cult-, col- | cultivate, till, inhabit | colere | colony , cult , cultivate , cultivation , culture |
| cut- | skin | cutis | cutaneous , cuticle |
| cyan- | blue | κυανός (kuanos) | cyanide |
| cycl- | circular | κύκλος (kuklos) | bicycle , cycle , cyclic , cyclone , cyclops , unicycle |
| cylind- | roll | κύλινδρος (kulindros) | cylinder |
| cyn- | dog | κύων, κυνός (kuōn, kunos) | cynology , cynosure |
| cyst- | capsule | κύστις (kustis) | cystic |
| cyt- | cell | κύτος (kutos) | cnidocyte , cytoplasm |