| cotter | (noun) fastener consisting of a wedge or pin inserted through a slot to hold two other pieces together | Synonyms: cottar |
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| (noun) a medieval English villein | Synonyms: cottier |
| (noun) a peasant farmer in the Scottish Highlands | Synonyms: cottar |
| cottier | (noun) a medieval English villein | Synonyms: cotter |
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| cougar | (noun) large American feline resembling a lion | Synonyms: catamount, Felis concolor, mountain lion, painter, panther, puma |
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| coulter | (noun) a sharp steel wedge that precedes the plow and cuts vertically through the soil | Synonyms: colter |
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| councillor | (noun) a member of a council | Synonyms: council member |
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| counsellor | (noun) a lawyer who pleads cases in court | Synonyms: advocate, counsel, counselor-at-law, counselor, pleader |
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| (noun) someone who gives advice about problems | Synonyms: counselor |
| (noun) someone who has supervisory duties at a summer camp | Synonyms: counselor |
| counselor | (noun) a lawyer who pleads cases in court | Synonyms: advocate, counsel, counsellor, counselor-at-law, pleader |
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| (noun) someone who gives advice about problems | Synonyms: counsellor |
| (noun) someone who has supervisory duties at a summer camp | Synonyms: counsellor |
| counter | (noun) a return punch (especially by a boxer) | Synonyms: counterpunch, parry |
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| (noun) table consisting of a horizontal surface over which business is transacted | - |
| (noun) a calculator that keeps a record of the number of times something happens | Synonyms: tabulator |
| (noun) a piece of leather forming the back of a shoe or boot | Synonyms: heel counter |
| (noun) game equipment (as a piece of wood, plastic, or ivory) used for keeping a count or reserving a space in various card or board games | - |
| (noun) a piece of furniture that stands at the side of a dining room; has shelves and drawers | Synonyms: buffet, sideboard |
| (noun) (computer science) a register whose contents go through a regular series of states (usually states indicating consecutive integers) | - |
| (noun) a quick reply to a question or remark (especially a witty or critical one) | Synonyms: comeback, rejoinder, replication, retort, return, riposte |
| (noun) a person who counts things | - |
| counterdemonstrator | (noun) someone who demonstrates in opposition to another demonstration | - |
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| counterfeiter | (noun) someone who makes copies illegally | Synonyms: forger |
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| counteroffer | (noun) an offer made by someone who has rejected a prior offer | - |
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| countertenor | (noun) the highest adult male singing voice | Synonyms: alto |
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| (noun) a male singer with a voice above that of a tenor | - |
| coupler | (noun) a mechanical device that serves to connect the ends of adjacent objects | Synonyms: coupling |
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| courier | (noun) a person who carries a message | Synonyms: messenger |
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| courser | (noun) swift-footed terrestrial plover-like bird of southern Asia and Africa; related to the pratincoles | - |
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| (noun) formerly a strong swift horse ridden into battle | Synonyms: charger |
| (noun) a dog trained for coursing | - |
| (noun) a huntsman who hunts small animals with fast dogs that use sight rather than scent to follow their prey | - |
| courtier | (noun) an attendant at the court of a sovereign | - |
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| couturier | (noun) someone who designs clothing | Synonyms: clothes designer, designer, fashion designer |
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| cover | (noun) the act of concealing the existence of something by obstructing the view of it | Synonyms: covering, masking, screening |
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| (noun) fire that makes it difficult for the enemy to fire on your own individuals or formations | Synonyms: covering fire |
| (noun) a false identity and background (especially one created for an undercover agent) | - |
| (noun) a recording of a song that was first recorded or made popular by somebody else | Synonyms: cover song, cover version |
| (noun) bedding that keeps a person warm in bed | Synonyms: blanket |
| (noun) a covering that serves to conceal or shelter something | Synonyms: concealment, covert, screen |
| (noun) covering for a hole (especially a hole in the top of a container) | Synonyms: top |
| (noun) the protective covering on the front, back, and spine of a book | Synonyms: back, binding, book binding |
| (noun) a natural object that covers or envelops | Synonyms: covering, natural covering |
| (noun) a fixed charge by a restaurant or nightclub over and above the charge for food and drink | Synonyms: cover charge |
| cowcatcher | (noun) an inclined metal frame at the front of a locomotive to clear the track | Synonyms: buffer, fender, pilot |
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| cowpuncher | (noun) a hired hand who tends cattle and performs other duties on horseback | Synonyms: cowhand, cowherd, cowpoke, puncher |
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| cracker | (noun) a party favor consisting of a paper roll (usually containing candy or a small favor) that pops when pulled at both ends | Synonyms: cracker bonbon, snapper |
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| (noun) firework consisting of a small explosive charge and fuse in a heavy paper casing | Synonyms: banger, firecracker |
| (noun) a thin crisp wafer made of flour and water with or without leavening and shortening; unsweetened or semisweet | - |
| (noun) a poor White person in the southern United States | Synonyms: redneck |
| (noun) a programmer who cracks (gains unauthorized access to) computers, typically to do malicious things | - |
| crafter | (noun) a creator of great skill in the manual arts | Synonyms: craftsman |
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| crammer | (noun) a textbook designed for cramming | - |
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| (noun) a special school where students are crammed | - |
| (noun) a student who crams | - |
| (noun) a teacher who is paid to cram students for examinations | - |
| craniometer | (noun) an instrument for measuring skull sizes | - |
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| crapper | (noun) a plumbing fixture for defecation and urination | Synonyms: can, commode, pot, potty, stool, throne, toilet |
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| crapshooter | (noun) a gambler who plays the game of craps | - |
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| crasher | (noun) someone who gets in (to a party) without an invitation or without paying | Synonyms: gatecrasher, unwelcome guest |
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| crater | (noun) a bowl-shaped depression formed by the impact of a meteorite or bomb | - |
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| (noun) a bowl-shaped geological formation at the top of a volcano | Synonyms: volcanic crater |
| crawler | (noun) terrestrial worm that burrows into and helps aerate soil; often surfaces when the ground is cool or wet; used as bait by anglers | Synonyms: angleworm, dew worm, earthworm, fishing worm, fishworm, nightcrawler, nightwalker, red worm, wiggler |
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| (noun) a person who tries to please someone in order to gain a personal advantage | Synonyms: ass-kisser, lackey, sycophant, toady |
| (noun) a person who crawls or creeps along the ground | Synonyms: creeper |
| crayer | (noun) a two- or three-masted sailing vessel formerly used for transporting cargo in the Baltic Sea. | - |
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| creamer | (noun) a small pitcher for serving cream | Synonyms: cream pitcher |
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| creator | (noun) a person who grows or makes or invents things | - |
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| creditor | (noun) a person to whom money is owed by a debtor; someone to whom an obligation exists | - |
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| creeper | (noun) any of various small insectivorous birds of the Northern Hemisphere that climb up a tree trunk supporting themselves on stiff tail feathers and their feet | Synonyms: tree creeper |
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| (noun) a person who crawls or creeps along the ground | Synonyms: crawler |
| (noun) any plant (as ivy or periwinkle) that grows by creeping | - |
| cricketer | (noun) an athlete who plays cricket | - |
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| crier | (noun) (formerly) an official who made public announcements | Synonyms: town crier |
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| (noun) a person who weeps | Synonyms: weeper |
| (noun) a peddler who shouts to advertise the goods he sells | - |
| crimper | (noun) a mechanical device consisting of a cylindrical tube around which the hair is wound to curl it | Synonyms: curler, hair curler, roller |
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| (noun) a hand tool used for joining two pieces of metal or other ductile material (usually a wire and a metal plate) by deforming one or both of them to hold the other. | Synonyms: crimping pliers |
| (noun) someone who tricks or coerces men into service as sailors or soldiers | Synonyms: crimp |
| critter | (noun) a regional term for `creature' (especially for domestic animals) | - |
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| croaker | (noun) any of several fishes that make a croaking noise | - |
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| (noun) the lean flesh of a saltwater fish caught along Atlantic coast of southern U.S. | - |
| crofter | (noun) an owner or tenant of a small farm in Great Britain | - |
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| crooner | (noun) a singer of popular ballads | Synonyms: balladeer |
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| cropper | (noun) small farmers and tenants | Synonyms: sharecrop farmer, sharecropper |
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| crosier | (noun) a staff surmounted by a crook or cross carried by bishops as a symbol of pastoral office | Synonyms: crozier |
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| crossbar | (noun) long thin horizontal crosspiece between two vertical posts | - |
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| (noun) game equipment consisting of a horizontal bar to be jumped or vaulted over | - |
| (noun) a horizontal bar that goes across something | - |
| crossbencher | (noun) a member of the House of Commons who does not vote regularly with either the government or the Opposition | - |
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| crossover | (noun) a path (often marked) where something (as a street or railroad) can be crossed to get from one side to the other | Synonyms: crossing, crosswalk |
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| (noun) the appropriation of a new style (especially in popular music) by combining elements of different genres in order to appeal to a wider audience | - |
| (noun) a voter who is registered as a member of one political party but who votes in the primary of another party | Synonyms: crossover voter |
| (noun) the interchange of sections between pairing homologous chromosomes during the prophase of meiosis | Synonyms: crossing over |
| croupier | (noun) someone who collects and pays bets at a gaming table | - |
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| crowbar | (noun) a heavy iron lever with one end forged into a wedge | Synonyms: pry, pry bar, wrecking bar |
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| crozier | (noun) a staff surmounted by a crook or cross carried by bishops as a symbol of pastoral office | Synonyms: crosier |
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| crucifer | (noun) any of various plants of the family Cruciferae | Synonyms: cruciferous plant |
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| cruiser | (noun) a large fast warship; smaller than a battleship and larger than a destroyer | - |
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| (noun) a large motorboat that has a cabin and plumbing and other conveniences necessary for living on board | Synonyms: cabin cruiser, pleasure boat, pleasure craft |
| (noun) a car in which policemen cruise the streets; equipped with radiotelephonic communications to headquarters | Synonyms: patrol car, police car, police cruiser, prowl car, squad car |
| cruller | (noun) small friedcake formed into twisted strips and fried; richer than doughnuts | Synonyms: twister |
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| crupper | (noun) a strap from the back of a saddle passing under the horse's tail; prevents saddle from slipping forward | - |
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| crusader | (noun) a disputant who advocates reform | Synonyms: meliorist, reformer, reformist, social reformer |
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| crusher | (noun) a device that crushes something | - |
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| cryometer | (noun) a thermometer designed to measure low temperatures | - |
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| cryptographer | (noun) decoder skilled in the analysis of codes and cryptograms | Synonyms: cryptanalyst, cryptologist |
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| crystallographer | (noun) a specialist in crystallography | - |
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| cuckooflower | (noun) a bitter cress of Europe and America | Synonyms: Cardamine pratensis, cuckoo flower, lady's smock, meadow cress |
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| cucumber | (noun) cylindrical green fruit with thin green rind and white flesh eaten as a vegetable; related to melons | Synonyms: cuke |
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| (noun) a melon vine of the genus Cucumis; cultivated from earliest times for its cylindrical green fruit | Synonyms: cucumber vine, Cucumis sativus |
| cudbear | (noun) a purplish dye obtained from orchil lichens | Synonyms: archil, orchil |
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| cuirassier | (noun) a cavalryman equipped with a cuirass | - |
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| cullender | (noun) bowl-shaped strainer; used to wash or drain foods | Synonyms: colander |
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| cultivar | (noun) a variety of a plant developed from a natural species and maintained under cultivation | - |
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| cultivator | (noun) a farm implement used to break up the surface of the soil (for aeration and weed control and conservation of moisture) | Synonyms: tiller |
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| (noun) someone concerned with the science or art or business of cultivating the soil | Synonyms: agriculturalist, agriculturist, grower, raiser |
| cunctator | (noun) someone who postpones work (especially out of laziness or habitual carelessness) | Synonyms: postponer, procrastinator |
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| cunner | (noun) common in north Atlantic coastal waters of the United States | Synonyms: bergall, Tautogolabrus adspersus |
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| cupbearer | (noun) the attendant (usually an officer of a nobleman's household) whose duty is to fill and serve cups of wine | - |
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| cupflower | (noun) any of various plants of the genus Nierembergia having upturned bell-shaped flowers | Synonyms: nierembergia |
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| (noun) Mexican evergreen climbing plant having large solitary funnel-shaped fragrant yellow flowers with purple-brown ridges in the throat | Synonyms: chalice vine, Solandra guttata, trumpet flower |
| cupper | (noun) a cup of tea | Synonyms: cuppa |
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| cur | (noun) an inferior dog or one of mixed breed | Synonyms: mongrel, mutt |
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| (noun) a cowardly or contemptible person | - |
| curator | (noun) the custodian of a collection (as a museum or library) | Synonyms: conservator |
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| curler | (noun) a mechanical device consisting of a cylindrical tube around which the hair is wound to curl it | Synonyms: crimper, hair curler, roller |
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| currier | (noun) a craftsman who curries leather for use | - |
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| cursor | (noun) (computer science) indicator consisting of a movable spot of light (an icon) on a visual display; moving it allows the user to point to commands or screen positions | Synonyms: pointer |
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| cuspidor | (noun) a receptacle for spit (usually in a public place) | Synonyms: spittoon |
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| customer | (noun) someone who pays for goods or services | Synonyms: client |
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| cutler | (noun) a dealer in cutlery | - |
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| cutter | (noun) a cutting implement; a tool for cutting | Synonyms: cutlery, cutting tool |
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| (noun) a boat for communication between ship and shore | Synonyms: pinnace, ship's boat, tender |
| (noun) a sailing vessel with a single mast set further back than the mast of a sloop | - |
| (noun) someone whose work is cutting (as e.g. cutting cloth for garments) | - |
| (noun) someone who carves the meat | Synonyms: carver |
| (noun) someone who cuts or carves stone | Synonyms: stonecutter |
| cyberwar | (noun) an assault on electronic communication networks | Synonyms: cyber-terrorism |
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| cyder | (noun) a beverage made from juice pressed from apples | Synonyms: cider |
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| cylinder | (noun) a cylindrical container for oxygen or compressed air | - |
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| (noun) a chamber within which piston moves | Synonyms: piston chamber |
| (noun) a surface generated by rotating a parallel line around a fixed line | - |
| (noun) a solid bounded by a cylindrical surface and two parallel planes (the bases) | - |
| cypher | (noun) a secret method of writing | Synonyms: cipher, cryptograph, secret code |
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| (noun) a message written in a secret code | Synonyms: cipher |
| (noun) a person of no influence | Synonyms: cipher, nobody, nonentity |
| (noun) a quantity of no importance; thing (object:), singular, negative pronoun; pronoun, thing, singular; quantifier: negative existential | Synonyms: aught, cipher, goose egg, nada, naught, nil, nix, nothing, null, zero, zilch, zip, zippo |
| (noun) a mathematical element that when added to another number yields the same number | Synonyms: 0, cipher, nought, zero |
| cytophotometer | (noun) a photometer that can be used to locate and identify chemical compounds in a cell by measuring the intensity of the light that passes through stained sections of the cytoplasm | - |
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| cytosmear | (noun) a thin tissue or blood sample spread on a glass slide and stained for cytologic examination and diagnosis under a microscope | Synonyms: cytologic smear, smear |
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| czar | (noun) a person having great power | - |
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| (noun) a male monarch or emperor (especially of Russia prior to 1917) | Synonyms: tsar, tzar |
| dabbler | (noun) any of numerous shallow-water ducks that feed by upending and dabbling | Synonyms: dabbling duck |
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| (noun) an amateur who engages in an activity without serious intentions and who pretends to have knowledge | Synonyms: dilettante, sciolist |
| dagger | (noun) a short knife with a pointed blade used for piercing or stabbing | Synonyms: sticker |
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| (noun) a character used in printing to indicate a second cross reference or footnote when the asterisk has already been used | Synonyms: obelisk |
| dallier | (noun) someone who wastes time | Synonyms: dilly-dallier, dillydallier, lounger, mope |
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| damar | (noun) any of various hard resins from trees of the family Dipterocarpaceae and of the genus Agathis; especially the amboyna pine | Synonyms: dammar, dammar resin, gum dammar |
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| dammar | (noun) any of various hard resins from trees of the family Dipterocarpaceae and of the genus Agathis; especially the amboyna pine | Synonyms: damar, dammar resin, gum dammar |
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| dampener | (noun) a device that dampens or moistens something | Synonyms: moistener |
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| damper | (noun) a depressing restraint | - |
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| (noun) a device that decreases the amplitude of electronic, mechanical, acoustical, or aerodynamic oscillations | Synonyms: muffler |
| (noun) a movable iron plate that regulates the draft in a stove or chimney or furnace | - |
| dancer | (noun) a performer who dances professionally | Synonyms: professional dancer, terpsichorean |
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| (noun) a person who participates in a social gathering arranged for dancing (as a ball) | Synonyms: social dancer |
| dander | (noun) a feeling of anger and animosity | Synonyms: hackles |
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| (noun) small scales from animal skins or hair or bird feathers that can cause allergic reactions in some people | - |
| danger | (noun) a venture undertaken without regard to possible loss or injury | Synonyms: peril, risk |
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| (noun) a dangerous place | - |
| (noun) the condition of being susceptible to harm or injury | - |
| (noun) a cause of pain or injury or loss | - |
| danseur | (noun) a male ballet dancer who is the partner of a ballerina | Synonyms: danseur noble |
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| darner | (noun) a person who mends by darning | - |
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| darter | (noun) a person or other animal that moves abruptly and rapidly | - |
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| (noun) fish-eating bird of warm inland waters having a long flexible neck and slender sharp-pointed bill | Synonyms: anhinga, snakebird |
| dasymeter | (noun) densimeter consisting of a thin glass globe that is weighed in a gas to determine its density | - |
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