| cainogenesis | (noun) introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution) | Synonyms: caenogenesis, cenogenesis, kainogenesis, kenogenesis |
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| calamitous | (adjective) (of events) having extremely unfortunate or dire consequences; bringing ruin | Synonyms: black, disastrous, fatal, fateful |
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| calamus | (noun) the hollow spine of a feather | Synonyms: quill, shaft |
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| (noun) any tropical Asian palm of the genus Calamus; light tough stems are a source of rattan canes | - |
| (noun) perennial marsh plant having swordlike leaves and aromatic roots | Synonyms: Acorus calamus, flagroot, myrtle flag, sweet calamus, sweet flag |
| (noun) the aromatic root of the sweet flag used medicinally | - |
| calcaneus | (noun) the largest tarsal bone; forms the human heel | Synonyms: heelbone, os tarsi fibulare |
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| calcareous | (adjective) composed of or containing or resembling calcium carbonate or calcite or chalk | Synonyms: chalky |
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| calceus | (noun) a shoe covering the ankle; worn by ancient Romans | - |
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| calcicolous | (adjective) growing or living in soil rich in lime | - |
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| calciferous | (adjective) bearing or producing or containing calcium or calcium carbonate or calcite | - |
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| calcifugous | (adjective) growing or living in acid soil | - |
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| calculous | (adjective) relating to or caused by or having a calculus or calculi | - |
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| calculus | (noun) the branch of mathematics that is concerned with limits and with the differentiation and integration of functions | Synonyms: infinitesimal calculus |
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| (noun) a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body | Synonyms: concretion |
| (noun) an incrustation that forms on the teeth and gums | Synonyms: tartar, tophus |
| caliculus | (noun) a small cup-shaped structure (as a taste bud or optic cup or cavity of a coral containing a polyp) | Synonyms: calycle, calyculus |
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| caliginous | (adjective) dark and misty and gloomy | - |
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| calisthenics | (noun) the practice of calisthenic exercises | Synonyms: callisthenics |
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| (noun) light exercises designed to promote general fitness | Synonyms: callisthenics |
| calliopsis | (noun) North American annual widely cultivated for its yellow flowers with purple-red to brownish centers; in some classifications placed in a subgenus Calliopsis | Synonyms: Coreopsis tinctoria |
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| callipygous | (adjective) pertaining to or having finely developed buttocks | Synonyms: callipygian |
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| callisthenics | (noun) the practice of calisthenic exercises | Synonyms: calisthenics |
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| (noun) light exercises designed to promote general fitness | Synonyms: calisthenics |
| callous | (adjective) emotionally hardened | Synonyms: indurate, pachydermatous |
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| (adjective) having calluses; having skin made tough and thick through wear | Synonyms: calloused, thickened |
| (verb) make insensitive or callous; deaden feelings or morals | Synonyms: cauterise, cauterize |
| callousness | (noun) devoid of passion or feeling; hardheartedness | Synonyms: callosity, hardness, insensibility, unfeelingness |
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| callowness | (noun) lacking and evidencing lack of experience of life | Synonyms: jejuneness, juvenility |
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| callus | (noun) (botany) an isolated thickening of tissue, especially a stiff protuberance on the lip of an orchid | - |
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| (noun) bony tissue formed during the healing of a fractured bone | - |
| (noun) an area of skin that is thick or hard from continual pressure or friction (as the sole of the foot) | Synonyms: callosity |
| (verb) form a callus or calluses | - |
| (verb) cause a callus to form on | - |
| calmness | (noun) steadiness of mind under stress | Synonyms: calm, composure, equanimity |
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| (noun) a feeling of calm; an absence of agitation or excitement | - |
| (noun) an absence of strong winds or rain | - |
| calumnious | (adjective) (used of statements) harmful and often untrue; tending to discredit or malign | Synonyms: calumniatory, defamatory, denigrating, denigrative, denigratory, libellous, libelous, slanderous |
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| calyculus | (noun) a small cup-shaped structure (as a taste bud or optic cup or cavity of a coral containing a polyp) | Synonyms: caliculus, calycle |
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| (noun) a group of bracts simulating a calyx as in a carnation or hibiscus | Synonyms: calycle, epicalyx, false calyx |
| camas | (noun) any of several plants of the genus Camassia; North and South America | Synonyms: camash, camass, camosh, quamash |
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| camass | (noun) any of several plants of the genus Camassia; North and South America | Synonyms: camas, camash, camosh, quamash |
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| camphoraceous | (adjective) being or having the properties of camphor | - |
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| campus | (noun) a field on which the buildings of a university are situated | - |
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| campylotropous | (adjective) (of a plant ovule) curved with the micropyle near the base almost touching its stalk | - |
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| canaliculus | (noun) a small canal or duct as in some bones and parts of plants | - |
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| cancellous | (adjective) having an open or latticed or porous structure | Synonyms: cancellate, cancellated |
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| cancerous | (adjective) like a cancer; an evil that grows and spreads | - |
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| (adjective) relating to or affected with cancer | - |
| candidiasis | (noun) an infection caused by fungi of the genus Monilia or Candida (especially Candida albicans) | Synonyms: monilia disease, moniliasis |
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| candidness | (noun) the quality of being honest and straightforward in attitude and speech | Synonyms: candor, candour, directness, forthrightness, frankness |
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| candlepins | (noun) a bowling game using slender bowling pins | Synonyms: candlepin bowling |
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| candyfloss | (noun) a candy made by spinning sugar that has been boiled to a high temperature | Synonyms: cotton candy, spun sugar |
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| cankerous | (adjective) having an ulcer or canker | Synonyms: ulcerated, ulcerous |
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| cannabis | (noun) the most commonly used illicit drug; considered a soft drug, it consists of the dried leaves of the hemp plant; smoked or chewed for euphoric effect | Synonyms: ganja, marihuana, marijuana |
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| (noun) any plant of the genus Cannabis; a coarse bushy annual with palmate leaves and clusters of small green flowers; yields tough fibers and narcotic drugs | Synonyms: hemp |
| canorous | (adjective) richly melodious | Synonyms: songful |
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| cantankerous | (adjective) having a difficult and contrary disposition | Synonyms: crotchety, ornery |
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| (adjective) stubbornly obstructive and unwilling to cooperate | Synonyms: bloody-minded |
| canthus | (noun) either of the corners of the eye where the upper and lower eyelids meet | - |
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| canvas | (noun) a heavy, closely woven fabric | Synonyms: canvass |
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| (noun) the mat that forms the floor of the ring in which boxers or professional wrestlers compete | Synonyms: canvass |
| (noun) a tent made of canvas fabric | Synonyms: canvas tent, canvass |
| (noun) a large piece of fabric (usually canvas fabric) by means of which wind is used to propel a sailing vessel | Synonyms: canvass, sail, sheet |
| (noun) an oil painting on canvas fabric | Synonyms: canvass |
| (noun) the setting for a narrative or fictional or dramatic account | Synonyms: canvass |
| (verb) cover with canvas | - |
| canvass | (noun) a heavy, closely woven fabric | Synonyms: canvas |
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| (noun) the mat that forms the floor of the ring in which boxers or professional wrestlers compete | Synonyms: canvas |
| (noun) a tent made of canvas fabric | Synonyms: canvas, canvas tent |
| (noun) a large piece of fabric (usually canvas fabric) by means of which wind is used to propel a sailing vessel | Synonyms: canvas, sail, sheet |
| (noun) an oil painting on canvas fabric | Synonyms: canvas |
| (noun) an inquiry into public opinion conducted by interviewing a random sample of people | Synonyms: opinion poll, poll, public opinion poll |
| (noun) the setting for a narrative or fictional or dramatic account | Synonyms: canvas |
| (verb) consider in detail and subject to an analysis in order to discover essential features or meaning | Synonyms: analyse, analyze, examine, study |
| (verb) solicit votes from potential voters in an electoral campaign | - |
| (verb) get the opinions (of people) by asking specific questions | Synonyms: poll |
| capableness | (noun) the quality of being capable -- physically or intellectually or legally | Synonyms: capability |
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| (noun) an aptitude that may be developed | Synonyms: capability, potentiality |
| capacious | (adjective) large in capacity | - |
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| capaciousness | (noun) spatial largeness and extensiveness (especially inside a building) | Synonyms: commodiousness, roominess, spaciousness |
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| (noun) intellectual breadth | Synonyms: roominess |
| capricious | (adjective) determined by chance or impulse or whim rather than by necessity or reason | Synonyms: impulsive, whimsical |
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| (adjective) changeable | Synonyms: freakish |
| capriciousness | (noun) the trait of acting unpredictably and more from whim or caprice than from reason or judgment | Synonyms: arbitrariness, flightiness, whimsey, whimsicality, whimsy |
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| (noun) the quality of being guided by sudden unpredictable impulses | Synonyms: unpredictability |
| captious | (adjective) tending to find and call attention to faults | Synonyms: faultfinding |
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| carbonaceous | (adjective) relating to or consisting of or yielding carbon | Synonyms: carbonic, carboniferous, carbonous |
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| carboniferous | (adjective) relating to or consisting of or yielding carbon | Synonyms: carbonaceous, carbonic, carbonous |
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| (adjective) of or relating to the Carboniferous geologic era | - |
| carbonous | (adjective) relating to or consisting of or yielding carbon | Synonyms: carbonaceous, carbonic, carboniferous |
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| carcass | (noun) the dead body of an animal especially one slaughtered and dressed for food | Synonyms: carcase |
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| carcinomatous | (adjective) being or relating to carcinoma | - |
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| carditis | (noun) inflammation of the heart | - |
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| cards | (noun) a game played with playing cards | Synonyms: card game |
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| carefreeness | (noun) the trait of being without worry or responsibility | - |
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| (noun) the cheerful feeling you have when nothing is troubling you | Synonyms: insouciance, lightheartedness, lightsomeness |
| carefulness | (noun) the quality of being careful and painstaking | - |
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| (noun) the trait of being cautious; being attentive to possible danger | Synonyms: caution, cautiousness |
| careless | (adjective) marked by lack of attention or consideration or forethought or thoroughness; not careful | - |
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| (adjective) effortless and unstudied | - |
| (adjective) (usually followed by `of') without due thought or consideration | Synonyms: regardless |
| carelessness | (noun) failure to act with the prudence that a reasonable person would exercise under the same circumstances | Synonyms: neglect, negligence, nonperformance |
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| (noun) the quality of not being careful or taking pains | Synonyms: sloppiness |
| caress | (noun) a gentle affectionate stroking (or something resembling it) | - |
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| (verb) touch or stroke lightly in a loving or endearing manner | Synonyms: fondle |
| caries | (noun) soft decayed area in a tooth; progressive decay can lead to the death of a tooth | Synonyms: cavity, dental caries, tooth decay |
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| carious | (adjective) (of teeth) affected with cavities or decay | - |
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| carnivorous | (adjective) (used of plants as well as animals) feeding on animals | - |
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| (adjective) relating to or characteristic of carnivores | - |
| carnivorousness | (noun) The quality of being an animal that eats meat as the main part of its diet. | Synonyms: zoophagy |
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| carpophagous | (adjective) feeding on fruit | Synonyms: fruit-eating |
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| carposporous | (adjective) having carpospores | - |
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| carpus | (noun) a joint between the distal end of the radius and the proximal row of carpal bones | Synonyms: articulatio radiocarpea, radiocarpal joint, wrist, wrist joint |
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| cartilaginous | (adjective) of or relating to cartilage | - |
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| (adjective) difficult to chew | Synonyms: gristly, rubbery |
| carunculous | (adjective) resembling a caruncle | Synonyms: caruncular |
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| caryophyllaceous | (adjective) of or pertaining to plants of the family Caryophyllaceae | - |
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| caryopsis | (noun) dry seed-like fruit produced by the cereal grasses: e.g. wheat, barley, Indian corn | Synonyms: grain |
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| caseous | (adjective) of damaged or necrotic tissue; cheeselike | - |
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| castanets | (noun) (used in the plural) a percussion instrument consisting of a pair of hollow pieces of wood or bone (usually held between the thumb and fingers) that are made to click together (as by Spanish dancers) in rhythm with the dance | Synonyms: bones, clappers, finger cymbals |
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| casteless | (adjective) not belonging to or having been expelled from a caste and thus having no place or status in society | Synonyms: outcaste |
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| casualness | (noun) a casual manner | Synonyms: familiarity |
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| (noun) The state of coming without regularity; of being occasional or incidental. | - |
| catabiosis | (noun) normal aging of cells | - |
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| catachresis | (noun) strained or paradoxical use of words either in error (as `blatant' to mean `flagrant') or deliberately (as in a mixed metaphor: `blind mouths') | - |
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| catadromous | (adjective) migrating from fresh water to the sea to spawn | - |
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| catalexis | (noun) the absence of a syllable in the last foot of a line or verse | - |
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| catalysis | (noun) acceleration of a chemical reaction induced by the presence of material that is chemically unchanged at the end of the reaction | Synonyms: contact action |
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| cataphoresis | (noun) the motion of charged particles in a colloid under the influence of an electric field; particles with a positive charge go to the cathode and negative to the anode | Synonyms: dielectrolysis, electrophoresis, ionophoresis |
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| catechesis | (noun) oral religious instruction (as before baptism or confirmation) | - |
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| catharsis | (noun) (psychoanalysis) purging of emotional tensions | Synonyms: abreaction, katharsis |
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| (noun) purging the body by the use of a cathartic to stimulate evacuation of the bowels | Synonyms: katharsis, purgation |
| cathexis | (noun) (psychoanalysis) the libidinal energy invested in some idea or person or object | Synonyms: charge |
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| catoptrics | (noun) branch of optics dealing with formation of images by mirrors | - |
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| cattiness | (noun) malevolence by virtue of being malicious or spiteful or nasty | Synonyms: bitchiness, nastiness, spite, spitefulness |
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| caucus | (noun) a closed political meeting | - |
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| (verb) meet to select a candidate or promote a policy | - |
| causeless | (adjective) having no cause or apparent cause | Synonyms: fortuitous, uncaused |
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| (adjective) having no justifying cause or reason | Synonyms: reasonless |
| cautious | (adjective) showing careful forethought | - |
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| (adjective) avoiding excess | Synonyms: conservative |
| (noun) people who are fearful and cautious | Synonyms: timid |
| cautiousness | (noun) the trait of being cautious; being attentive to possible danger | Synonyms: carefulness, caution |
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| cavernous | (adjective) filled with vascular sinuses and capable of becoming distended and rigid as the result of being filled with blood | Synonyms: erectile |
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| (adjective) being or suggesting a cavern | - |
| ceaseless | (adjective) uninterrupted in time and indefinitely long continuing | Synonyms: constant, incessant, never-ending, perpetual, unceasing, unremitting |
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| ceaselessness | (noun) the quality of something that continues without end or interruption | Synonyms: continuousness, incessancy, incessantness |
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| celiocentesis | (noun) removal of fluid from the abdomen by centesis | - |
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| cellulitis | (noun) an inflammation of body tissue (especially that below the skin) characterized by fever and swelling and redness and pain | - |
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| cementitious | (adjective) like or relevant to or having the properties of cement | - |
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| cenogenesis | (noun) introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (such as the addition of the placenta in mammalian evolution) | Synonyms: caenogenesis, cainogenesis, kainogenesis, kenogenesis |
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| censorious | (adjective) harshly critical or expressing censure | - |
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| census | (noun) a periodic count of the population | Synonyms: nose count, nosecount |
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| (verb) conduct a census | - |