| caste | (noun) in some social insects (such as ants) a physically distinct individual or group of individuals specialized to perform certain functions in the colony | - |
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| (noun) a social class separated from others by distinctions of hereditary rank or profession or wealth | - |
| (noun) (Hinduism) a hereditary social class among Hindus; stratified according to ritual purity | - |
| (noun) social status or position conferred by a system based on class | - |
| castle | (noun) interchanging the positions of the king and a rook | Synonyms: castling |
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| (noun) a large building formerly occupied by a ruler and fortified against attack | - |
| (noun) (chess) the piece that can move any number of unoccupied squares in a direction parallel to the sides of the chessboard | Synonyms: rook |
| (noun) a large and stately mansion | Synonyms: palace |
| castrate | (noun) a man who has been castrated and is incapable of reproduction | Synonyms: eunuch |
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| catafalque | (noun) a decorated bier on which a coffin rests in state during a funeral | - |
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| catalase | (noun) enzyme found in most plant and animal cells that functions as an oxidative catalyst; decomposes hydrogen peroxide into oxygen and water | - |
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| catalogue | (noun) a book or pamphlet containing an enumeration of things | Synonyms: catalog |
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| (noun) a complete list of things; usually arranged systematically | Synonyms: catalog |
| catamite | (noun) a boy who submits to a sexual relationship with a man | - |
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| catananche | (noun) any of several plants of the genus Catananche having long-stalked heads of blue or yellow flowers | - |
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| catarrhine | (noun) of Africa or Arabia or Asia; having nonprehensile tails and nostrils close together | Synonyms: Old World monkey |
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| catastrophe | (noun) an event resulting in great loss and misfortune | Synonyms: calamity, cataclysm, disaster, tragedy |
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| (noun) a sudden violent change in the earth's surface | Synonyms: cataclysm |
| (noun) a state of extreme (usually irremediable) ruin and misfortune | Synonyms: disaster |
| catchphrase | (noun) a phrase that has become a catchword | Synonyms: catch phrase |
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| catecholamine | (noun) any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal gland | - |
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| categoreme | (noun) a categorematic expression; a term capable of standing alone as the subject or predicate of a logical proposition | Synonyms: categorem |
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| cathode | (noun) a negatively charged electrode that is the source of electrons entering an electrical device | - |
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| (noun) the positively charged terminal of a voltaic cell or storage battery that supplies current | - |
| cathouse | (noun) a building where prostitutes are available | Synonyms: bagnio, bawdyhouse, bordello, brothel, house of ill repute, house of prostitution, sporting house, whorehouse |
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| cattie | (noun) any of various units of weight used in southeastern Asia (especially a Chinese measure equal to 500 grams) | Synonyms: catty |
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| cattle | (noun) domesticated bovine animals as a group regardless of sex or age | Synonyms: Bos taurus, cows, kine, oxen |
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| caudate | (noun) amphibians that resemble lizards | Synonyms: urodele |
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| (noun) a tail-shaped basal ganglion located in a lateral ventricle of the brain | Synonyms: caudate nucleus |
| cause | (noun) any entity that produces an effect or is responsible for events or results | Synonyms: causal agency, causal agent |
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| (noun) a comprehensive term for any proceeding in a court of law whereby an individual seeks a legal remedy | Synonyms: case, causa, lawsuit, suit |
| (noun) a series of actions advancing a principle or tending toward a particular end | Synonyms: campaign, crusade, drive, effort, movement |
| (noun) a justification for something existing or happening | Synonyms: grounds, reason |
| (noun) events that provide the generative force that is the origin of something | - |
| causerie | (noun) light informal conversation for social occasions | Synonyms: chin-wag, chin-wagging, chin wag, chin wagging, chit-chat, chit chat, chitchat, gab, gabfest, gossip, small talk, tittle-tattle |
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| cavalcade | (noun) a procession of people traveling on horseback | - |
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| cave | (noun) a geological formation consisting of an underground enclosure with access from the surface of the ground or from the sea | - |
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| caviare | (noun) salted roe of sturgeon or other large fish; usually served as an hors d'oeuvre | Synonyms: caviar |
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| cayenne | (noun) ground pods and seeds of pungent red peppers of the genus Capsicum | Synonyms: cayenne pepper, red pepper |
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| (noun) a long and often twisted hot red pepper | Synonyms: cayenne pepper |
| (noun) plant bearing very hot and finely tapering long peppers; usually red | Synonyms: Capsicum annuum longum, cayenne pepper, chili pepper, chilli pepper, jalapeno, long pepper |
| cayuse | (noun) a small native range horse | Synonyms: Indian pony |
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| cazique | (noun) black-and-red or black-and-yellow orioles of the American tropics | Synonyms: cacique |
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| cease | (noun) (`cease' is a noun only in the phrase `without cease') end | - |
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| cefoperazone | (noun) a parenteral cephalosporin (trade name Cefobid) used for severe infections | Synonyms: Cefobid |
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| cefotaxime | (noun) a parenteral cephalosporin (trade name Claforan) used for severe infections of the lungs or throat or ears or urinary tract | Synonyms: Claforan |
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| ceftazidime | (noun) a parenteral cephalosporin (trade names Fortaz and Tazicef) used to treat moderate infections | Synonyms: Fortaz, Tazicef |
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| ceftriaxone | (noun) a parenteral cephalosporin (trade name Rocephin) used for severe infection of the lungs or throat or ears or urinary tract | Synonyms: Rocephin |
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| cefuroxime | (noun) a cephalosporin that can be given parenterally (trade name Zinacef) or orally by tablets (trade name Ceftin); indicated for infections of the lungs or throat or ears or urinary tract or meninges | Synonyms: Ceftin, Zinacef |
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| celandine | (noun) perennial herb with branched woody stock and bright yellow flowers | Synonyms: Chelidonium majus, greater celandine, swallow wort, swallowwort |
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| (noun) North American annual plant with usually yellow or orange flowers; grows chiefly on wet rather acid soil | Synonyms: Impatiens capensis, jewelweed, lady's earrings, orange balsam, touch-me-not |
| celestite | (noun) a mineral consisting of strontium sulphate | - |
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| celibate | (noun) an unmarried person who has taken a religious vow of chastity | - |
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| cellarage | (noun) a storage area in a cellar | - |
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| (noun) a charge for storing goods in a cellar | - |
| cellophane | (noun) a transparent paperlike product that is impervious to moisture and used to wrap candy or cigarettes etc. | - |
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| cellphone | (noun) a hand-held mobile radiotelephone for use in an area divided into small sections, each with its own short-range transmitter/receiver | Synonyms: cell, cellular phone, cellular telephone, mobile phone |
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| cellulite | (noun) lumpy deposits of body fat especially on women's thighs etc. | - |
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| cellulose | (noun) a polysaccharide that is the chief constituent of all plant tissues and fibers | - |
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| celtuce | (noun) leaves having celery-like stems eaten raw or cooked | - |
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| (noun) lettuce valued especially for its edible stems | Synonyms: Lactuca sativa asparagina, stem lettuce |
| cementite | (noun) a chemical compound that is a constituent of steel and cast iron; very hard and brittle | Synonyms: iron carbide |
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| cenobite | (noun) a member of a religious order living in common | Synonyms: coenobite |
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| censure | (noun) harsh criticism or disapproval | Synonyms: animadversion |
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| (noun) the state of being excommunicated | Synonyms: exclusion, excommunication |
| centare | (noun) a unit of measurement for area, defined as the area of a square with sides of exactly 1 metre; a centiare is 1/100th of an are | Synonyms: square meter, square metre |
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| centerline | (noun) a line that bisects a plane figure | Synonyms: center line |
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| centerpiece | (noun) something placed at the center of something else (as on a table) | Synonyms: centrepiece |
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| (noun) the central or most important feature | Synonyms: centrepiece |
| centile | (noun) (statistics) any of the 99 numbered points that divide an ordered set of scores into 100 parts each of which contains one-hundredth of the total | Synonyms: percentile |
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| centilitre | (noun) a metric unit of volume equal to one hundredth of a liter | Synonyms: centiliter, cl |
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| centime | (noun) a coin worth one-hundredth of the value of the basic unit | Synonyms: cent, penny |
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| (noun) a fractional monetary unit of several countries: France and Algeria and Belgium and Burkina Faso and Burundi and Cameroon and Chad and the Congo and Gabon and Haiti and the Ivory Coast and Luxembourg and Mali and Morocco and Niger and Rwanda and Senegal and Switzerland and Togo | - |
| centimetre | (noun) a metric unit of length equal to one hundredth of a meter | Synonyms: centimeter, cm |
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| centipede | (noun) chiefly nocturnal predacious arthropod having a flattened body of 15 to 173 segments each with a pair of legs, the foremost pair being modified as prehensors | - |
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| centre | (noun) a position on a basketball team of the player who participates in the jump that starts the game | Synonyms: center |
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| (noun) (American football) the position of the player on the line of scrimmage who puts the ball in play | Synonyms: center |
| (noun) the position on a hockey team of the player who participates in the face off at the beginning of the game | Synonyms: center |
| (noun) a building dedicated to a particular activity | Synonyms: center |
| (noun) the piece of ground in the outfield directly ahead of the catcher | Synonyms: center, center field, centerfield |
| (noun) mercantile establishment consisting of a carefully landscaped complex of shops representing leading merchandisers; usually includes restaurants and a convenient parking area; a modern version of the traditional marketplace | Synonyms: center, mall, plaza, shopping center, shopping centre, shopping mall |
| (noun) a cluster of nerve cells governing a specific bodily process | Synonyms: center, nerve center, nerve centre |
| (noun) the choicest or most essential or most vital part of some idea or experience | Synonyms: center, core, essence, gist, heart, heart and soul, inwardness, kernel, marrow, meat, nitty-gritty, nub, pith, substance, sum |
| (noun) the object upon which interest and attention focuses | Synonyms: center, center of attention, centre of attention |
| (noun) the sweet central portion of a piece of candy that is enclosed in chocolate or some other covering | Synonyms: center |
| (noun) politically moderate persons; centrists | Synonyms: center |
| (noun) the middle of a military or naval formation | Synonyms: center |
| (noun) a point equidistant from the ends of a line or the extremities of a figure | Synonyms: center, midpoint |
| (noun) an area that is approximately central within some larger region | Synonyms: center, eye, heart, middle |
| (noun) a place where some particular activity is concentrated | Synonyms: center |
| (noun) (football) the person who plays center on the line of scrimmage and snaps the ball to the quarterback | Synonyms: center, snapper |
| (noun) (basketball) the person who plays center on a basketball team | Synonyms: center |
| (noun) (ice hockey) the person who plays center on a hockey team | Synonyms: center |
| centrepiece | (noun) something placed at the center of something else (as on a table) | Synonyms: centerpiece |
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| (noun) the central or most important feature | Synonyms: centerpiece |
| centrifuge | (noun) an apparatus that uses centrifugal force to separate particles from a suspension | Synonyms: extractor, separator |
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| centriole | (noun) one of a pair of small cylindrical cell organelles near the nucleus in animal cells; composed of nine triplet microtubules and form the asters during mitosis | - |
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| centromere | (noun) a specialized condensed region of each chromosome that appears during mitosis where the chromatids are held together to form an X shape | Synonyms: kinetochore |
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| centrosome | (noun) small region of cytoplasm adjacent to the nucleus; contains the centrioles and serves to organize the microtubules | Synonyms: central body |
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| cephalochordate | (noun) fish-like animals having a notochord rather than a true spinal column | - |
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| cephaloridine | (noun) a broad spectrum semisynthetic antibiotic produced by modifying cephalosporin | - |
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| cerate | (noun) a hard medicated paste made of lard or oil mixed with wax or resin | - |
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| cere | (noun) the fleshy, waxy covering at the base of the upper beak of some birds | - |
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| cerebroside | (noun) A cerebroside is any of various organic lipid compounds containing glucose or galactose and glucose; it occurs in the myelin sheath of cerebrospinal neurons. | - |
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| cerise | (noun) a red the color of ripe cherries | Synonyms: cherry, cherry red |
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| certificate | (noun) a document attesting to the truth of certain stated facts | Synonyms: certification, credential, credentials |
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| (noun) a formal declaration that documents a fact of relevance to finance and investment; the holder has a right to receive interest or dividends | Synonyms: security |
| certitude | (noun) total certainty or greater certainty than circumstances warrant | Synonyms: cocksureness, overconfidence |
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| ceruse | (noun) a poisonous white pigment that contains lead | Synonyms: lead carbonate, white lead |
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| cerussite | (noun) a mineral consisting of lead carbonate that is an important source of lead | Synonyms: white lead ore |
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| cestode | (noun) ribbonlike flatworms that are parasitic in the intestines of humans and other vertebrates | Synonyms: tapeworm |
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| cetrimide | (noun) a cationic detergent that is a powerful disinfectant | - |
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| ceylonite | (noun) a dark-colored spinel containing iron | Synonyms: pleonaste |
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| chabasite | (noun) a group of minerals of the zeolite family consisting of a hydrous silicate of calcium and aluminum | Synonyms: chabazite |
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| chabazite | (noun) a group of minerals of the zeolite family consisting of a hydrous silicate of calcium and aluminum | Synonyms: chabasite |
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| chafe | (noun) anger produced by some annoying irritation | Synonyms: annoyance, vexation |
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| (noun) soreness and warmth caused by friction | - |
| chaise | (noun) a carriage consisting of two wheels and a calash top; drawn by a single horse | Synonyms: shay |
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| (noun) a long chair; for reclining | Synonyms: chaise longue, daybed |
| chalcanthite | (noun) hydrated blue crystalline form of copper sulfate | Synonyms: blue copperas, blue stone, blue vitriol |
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| chalcocite | (noun) a heavy grey mineral that is an ore of copper | Synonyms: copper glance |
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| chalcopyrite | (noun) a yellow copper ore (CuFeS2) made up of copper and iron sulfide | Synonyms: copper pyrites |
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| chalice | (noun) a bowl-shaped drinking vessel; especially the Eucharistic cup | Synonyms: goblet |
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| chalkstone | (noun) a deposit of urates around a joint or in the external ear; diagnostic of advanced or chronic gout | Synonyms: tophus |
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| challenge | (noun) a call to engage in a contest or fight | - |
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| (noun) questioning a statement and demanding an explanation | - |
| (noun) a formal objection to the selection of a particular person as a juror | - |
| (noun) a demand by a sentry for a password or identification | - |
| (noun) a demanding or stimulating situation | - |
| chalybite | (noun) iron ore in the form of ferrous carbonate | Synonyms: siderite |
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| chamarre | (noun) a fur-lined coat decorated with braid, worn in the sixteenth century. | Synonyms: chimer, simarre |
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| chamomile | (noun) Eurasian plant with apple-scented foliage and white-rayed flowers and feathery leaves used medicinally; in some classification systems placed in genus Anthemis | Synonyms: Anthemis nobilis, camomile, Chamaemelum nobilis |
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| chamosite | (noun) a greenish grey or black silicate of iron and aluminum | - |
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| champagne | (noun) a white sparkling wine either produced in Champagne or resembling that produced there | Synonyms: bubbly |
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| chance | (noun) a risk involving danger | - |
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| (noun) a measure of how likely it is that some event will occur; a number expressing the ratio of favorable cases to the whole number of cases possible | Synonyms: probability |
| (noun) an unknown and unpredictable phenomenon that causes an event to result one way rather than another | Synonyms: fortune, hazard, luck |
| (noun) a possibility due to a favorable combination of circumstances | Synonyms: opportunity |
| (noun) the possibility of future success | Synonyms: prospect |
| chancre | (noun) a small hard painless nodule at the site of entry of a pathogen (as syphilis) | - |
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| chandelle | (noun) a flight maneuver consisting of a steep climbing turn executed to gain altitude while changing direction | - |
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| change | (noun) the action of changing something | - |
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| (noun) a different or fresh set of clothes | - |
| (noun) a thing that is different | - |
| (noun) a difference that is usually pleasant | Synonyms: variety |
| (noun) an event that occurs when something passes from one state or phase to another | Synonyms: alteration, modification |
| (noun) the result of alteration or modification | - |
| (noun) coins of small denomination regarded collectively | - |
| (noun) the balance of money received when the amount you tender is greater than the amount due | - |
| (noun) money received in return for its equivalent in a larger denomination or a different currency | - |
| (noun) a relational difference between states; especially between states before and after some event | - |
| chantarelle | (noun) widely distributed edible mushroom rich yellow in color with a smooth cap and a pleasant apricot aroma | Synonyms: Cantharellus cibarius, chanterelle |
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| chanterelle | (noun) widely distributed edible mushroom rich yellow in color with a smooth cap and a pleasant apricot aroma | Synonyms: Cantharellus cibarius, chantarelle |
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| chaperone | (noun) one who accompanies and supervises a young woman or gatherings of young people | Synonyms: chaperon |
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| chapterhouse | (noun) a house used as a residence by a chapter of a fraternity | Synonyms: frat house, fraternity house |
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| (noun) a building attached to a monastery or cathedral; used as a meeting place for the chapter | - |
| charade | (noun) making a false outward show | Synonyms: masquerade |
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| (noun) a word acted out in an episode of the game of charades | - |
| charcuterie | (noun) a delicatessen that specializes in meats | - |
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| charge | (noun) attention and management implying responsibility for safety | Synonyms: care, guardianship, tutelage |
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| (noun) an impetuous rush toward someone or something | - |
| (noun) a special assignment that is given to a person or group | Synonyms: commission, mission |
| (noun) a quantity of explosive to be set off at one time | Synonyms: burster, bursting charge, explosive charge |
| (noun) heraldry consisting of a design or image depicted on a shield | Synonyms: armorial bearing, bearing, heraldic bearing |
| (noun) (criminal law) a pleading describing some wrong or offense | Synonyms: complaint |
| (noun) a formal statement of a command or injunction to do something | Synonyms: commission, direction |
| (noun) request for payment of a debt | Synonyms: billing |
| (noun) an assertion that someone is guilty of a fault or offence | Synonyms: accusation |
| (noun) the swift release of a store of affective force | Synonyms: bang, boot, flush, kick, rush, thrill |
| (noun) (psychoanalysis) the libidinal energy invested in some idea or person or object | Synonyms: cathexis |
| (noun) a person committed to your care | - |
| (noun) the quantity of unbalanced electricity in a body (either positive or negative) and construed as an excess or deficiency of electrons | Synonyms: electric charge |
| (noun) financial liabilities (such as a tax) | - |
| (noun) the price charged for some article or service | - |
| charlotte | (noun) a mold lined with cake or crumbs and filled with fruit or whipped cream or custard | - |
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| charterhouse | (noun) a Carthusian monastery | - |
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| chartreuse | (noun) a shade of green tinged with yellow | Synonyms: Paris green, pea green, yellow green, yellowish green |
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