| cockup | (noun) something badly botched or muddled | Synonyms: balls-up, ballup, mess-up |
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| coco | (noun) tall palm tree bearing coconuts as fruits; widely planted throughout the tropics | Synonyms: coco palm, cocoa palm, coconut, coconut palm, coconut tree, Cocos nucifera |
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| cocoa | (noun) powder of ground roasted cacao beans with most of the fat removed | - |
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| (noun) a beverage made from cocoa powder and milk and sugar; usually drunk hot | Synonyms: chocolate, drinking chocolate, hot chocolate |
| cocoanut | (noun) large hard-shelled oval nut with a fibrous husk containing thick white meat surrounding a central cavity filled (when fresh) with fluid or milk | Synonyms: coconut |
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| cocobolo | (noun) a valuable timber tree of tropical South America | Synonyms: Dalbergia retusa |
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| coconspirator | (noun) a member of a conspiracy | Synonyms: conspirator, machinator, plotter |
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| coconut | (noun) large hard-shelled oval nut with a fibrous husk containing thick white meat surrounding a central cavity filled (when fresh) with fluid or milk | Synonyms: cocoanut |
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| (noun) the edible white meat of a coconut; often shredded for use in e.g. cakes and curries | Synonyms: coconut meat |
| (noun) tall palm tree bearing coconuts as fruits; widely planted throughout the tropics | Synonyms: coco, coco palm, cocoa palm, coconut palm, coconut tree, Cocos nucifera |
| cocoon | (noun) silky envelope spun by the larvae of many insects to protect pupas and by spiders to protect eggs | - |
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| cocooning | (noun) retreating to the seclusion of your home (as for privacy or escape) | - |
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| cocoswood | (noun) wood of the granadilla tree used for making musical instruments especially clarinets | Synonyms: cocuswood, granadilla wood |
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| cocotte | (noun) a small casserole in which individual portions can be cooked and served | - |
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| (noun) a woman who engages in sexual intercourse for money | Synonyms: bawd, cyprian, fancy woman, harlot, lady of pleasure, prostitute, sporting lady, tart, whore, woman of the street, working girl |
| cocoyam | (noun) tropical starchy tuberous root | Synonyms: dasheen, edda, taro, taro root |
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| (noun) edible starchy tuberous root of taro plants | Synonyms: dasheen, eddo, taro |
| cocozelle | (noun) squash resembling zucchini | - |
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| (noun) squash plant having dark green fruit with skin mottled with light green or yellow | Synonyms: Italian vegetable marrow |
| cocuswood | (noun) wood of the granadilla tree used for making musical instruments especially clarinets | Synonyms: cocoswood, granadilla wood |
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| cod | (noun) major food fish of Arctic and cold-temperate waters | Synonyms: codfish |
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| (noun) lean white flesh of important North Atlantic food fish; usually baked or poached | Synonyms: codfish |
| (noun) the vessel that contains the seeds of a plant (not the seeds themselves) | Synonyms: pod, seedcase |
| coda | (noun) the closing section of a musical composition | Synonyms: finale |
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| coddler | (noun) someone who pampers or spoils by excessive indulgence | Synonyms: mollycoddler, pamperer, spoiler |
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| code | (noun) a coding system used for transmitting messages requiring brevity or secrecy | - |
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| (noun) a set of rules or principles or laws (especially written ones) | Synonyms: codification |
| (noun) (computer science) the symbolic arrangement of data or instructions in a computer program or the set of such instructions | Synonyms: computer code |
| (noun) a series of letters, numbers or symbols assigned to something for the purpose of classification or identification | - |
| codefendant | (noun) a defendant who has been joined together with one or more other defendants in a single action | Synonyms: co-defendant |
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| codeine | (noun) derivative of opium; used as an antitussive (to relieve coughing) and an analgesic (to relieve pain) | - |
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| coder | (noun) a person who designs and writes and tests computer programs | Synonyms: computer programmer, programmer, software engineer |
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| codetalker | (noun) a secret agent who was one of the Navajos who devised and used a code based on their native language; the code was unbroken by the Japanese during World War II | Synonyms: windtalker |
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| codex | (noun) an unbound manuscript of some ancient classic (as distinguished from a scroll) | Synonyms: leaf-book |
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| (noun) an official list of chemicals or medicines etc. | - |
| codfish | (noun) major food fish of Arctic and cold-temperate waters | Synonyms: cod |
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| (noun) lean white flesh of important North Atlantic food fish; usually baked or poached | Synonyms: cod |
| codger | (noun) used affectionately to refer to an eccentric but amusing old man | Synonyms: old codger |
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| codicil | (noun) a supplement to a will; a testamentary instrument intended to alter an already executed will | - |
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| codification | (noun) the act of codifying; arranging in a systematic order | - |
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| (noun) a set of rules or principles or laws (especially written ones) | Synonyms: code |
| coding | (noun) act of writing in code or cipher | Synonyms: cryptography, secret writing, steganography |
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| codling | (noun) young codfish | - |
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| codon | (noun) a specific sequence of three adjacent nucleotides on a strand of DNA or RNA that specifies the genetic code information for synthesizing a particular amino acid | - |
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| codpiece | (noun) (15th-16th century) a flap for the crotch of men's tight-fitting breeches | - |
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| codswallop | (noun) nonsensical talk or writing | Synonyms: applesauce, folderol, rubbish, trash, tripe, trumpery, wish-wash |
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| coeducation | (noun) education of men and women in the same institutions | - |
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| coefficient | (noun) a constant number that serves as a measure of some property or characteristic | - |
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| coelacanth | (noun) fish thought to have been extinct since the Cretaceous period but found in 1938 off the coast of Africa | Synonyms: Latimeria chalumnae |
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| coelenterate | (noun) radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms | Synonyms: cnidarian |
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| coelenteron | (noun) the saclike body cavity of a coelenterate | - |
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| coelogyne | (noun) any of various orchids of the genus Coelogyne with: clusters of fragrant lacy snow-white flowers; salmon-pink solitary flowers; chainlike racemes of topaz and chocolate brown flowers; spikes of delicate white spice-scented flowers; emerald green flowers marked with blue-black | - |
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| coelom | (noun) a cavity in the mesoderm of an embryo that gives rise in humans to the pleural cavity and pericardial cavity and peritoneal cavity | Synonyms: celom, celoma |
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| coelophysis | (noun) one of the oldest known dinosaurs; late Triassic; cannibalistic | - |
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| coelostat | (noun) optical device used to follow the path of a celestial body and reflect its light into a telescope; has a movable and a fixed mirror | - |
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| coenobite | (noun) a member of a religious order living in common | Synonyms: cenobite |
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| coenzyme | (noun) a small molecule (not a protein but sometimes a vitamin) essential for the activity of some enzymes | - |
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| coercion | (noun) using force to cause something to occur | Synonyms: compulsion |
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| (noun) the act of compelling by force of authority | - |
| coeval | (noun) a person of nearly the same age as another | Synonyms: contemporary |
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| coevals | (noun) all the people living at the same time or of approximately the same age | Synonyms: contemporaries, generation |
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| coexistence | (noun) existing peacefully together | - |
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| coextension | (noun) equality of extension or duration | - |
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| cofactor | (noun) a substance (as a coenzyme) that must join with another to produce a given result | - |
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| coffee | (noun) a medium brown to dark-brown color | Synonyms: burnt umber, chocolate, deep brown, umber |
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| (noun) a beverage consisting of an infusion of ground coffee beans | Synonyms: java |
| (noun) a seed of the coffee tree; ground to make coffee | Synonyms: coffee bean, coffee berry |
| (noun) any of several small trees and shrubs native to the tropical Old World yielding coffee beans | Synonyms: coffee tree |
| coffeeberry | (noun) evergreen shrub of western United States bearing small red or black fruits | Synonyms: California buckthorn, California coffee, Rhamnus californicus |
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| coffeecake | (noun) a cake or sweet bread usually served with coffee | Synonyms: coffee cake |
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| coffeehouse | (noun) a small restaurant where drinks and snacks are sold | Synonyms: cafe, coffee bar, coffee shop |
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| coffeepot | (noun) tall pot in which coffee is brewed | - |
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| coffer | (noun) a chest especially for storing valuables | - |
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| (noun) an ornamental sunken panel in a ceiling or dome | Synonyms: caisson, lacunar |
| cofferdam | (noun) large watertight chamber used for construction under water | Synonyms: caisson, pneumatic caisson |
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| coffin | (noun) box in which a corpse is buried or cremated | Synonyms: casket |
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| cofounder | (noun) one of a group of founders | - |
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| cog | (noun) tooth on the rim of gear wheel | Synonyms: sprocket |
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| (noun) a subordinate who performs an important but routine function | - |
| cogency | (noun) the quality of being valid and rigorous | Synonyms: rigor, rigour, validity |
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| (noun) persuasive relevance | - |
| cogitation | (noun) attentive consideration and meditation | Synonyms: study |
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| (noun) a carefully considered thought about something | - |
| cognate | (noun) a word is cognate with another if both derive from the same word in an ancestral language | Synonyms: cognate word |
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| (noun) one related by blood or origin; especially on sharing an ancestor with another | Synonyms: blood relation, blood relative, sib |
| cognation | (noun) (anthropology) the condition of being related by blood | Synonyms: blood kinship, consanguinity |
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| (noun) line of descent traced through the maternal side of the family | Synonyms: enation, matrilineage |
| cognisance | (noun) having knowledge of | Synonyms: awareness, cognizance, consciousness, knowingness |
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| cognition | (noun) the psychological result of perception and learning and reasoning | Synonyms: knowledge, noesis |
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| cognizance | (noun) having knowledge of | Synonyms: awareness, cognisance, consciousness, knowingness |
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| (noun) range of what one can know or understand | Synonyms: ken |
| (noun) range or scope of what is perceived | - |
| cognomen | (noun) the name used to identify the members of a family (as distinguished from each member's given name) | Synonyms: family name, last name, surname |
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| (noun) a familiar name for a person (often a shortened version of a person's given name) | Synonyms: byname, moniker, nickname, sobriquet, soubriquet |
| cognoscente | (noun) an expert able to appreciate a field; especially in the fine arts | Synonyms: connoisseur |
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| cogwheel | (noun) a toothed wheel that engages another toothed mechanism in order to change the speed or direction of transmitted motion | Synonyms: gear, gear wheel, geared wheel |
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| cohabitation | (noun) the act of living together and having a sexual relationship (especially without being married) | - |
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| coherence | (noun) logical and orderly and consistent relation of parts | Synonyms: coherency |
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| (noun) the state of cohering or sticking together | Synonyms: coherency, cohesion, cohesiveness |
| coherency | (noun) logical and orderly and consistent relation of parts | Synonyms: coherence |
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| (noun) the state of cohering or sticking together | Synonyms: coherence, cohesion, cohesiveness |
| cohesion | (noun) (physics) the intermolecular force that holds together the molecules in a solid or liquid | - |
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| (noun) (botany) the process in some plants of parts growing together that are usually separate (such as petals) | - |
| (noun) (linguistics) the grammatical and lexical linking within a text or sentence that holds a text together and gives it meaning. | - |
| (noun) the state of cohering or sticking together | Synonyms: coherence, coherency, cohesiveness |
| cohesiveness | (noun) the property of being cohesive and sticky | Synonyms: glueyness, gluiness, gumminess, ropiness, tackiness, viscidity, viscidness |
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| (noun) the state of cohering or sticking together | Synonyms: coherence, coherency, cohesion |
| coho | (noun) small salmon of northern Pacific coasts and the Great Lakes | Synonyms: blue jack, coho salmon, cohoe, Oncorhynchus kisutch, silver salmon |
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| (noun) fatty pinkish flesh of small salmon caught in the Pacific and Great Lakes | Synonyms: coho salmon, cohoe, silver salmon |
| cohoe | (noun) small salmon of northern Pacific coasts and the Great Lakes | Synonyms: blue jack, coho, coho salmon, Oncorhynchus kisutch, silver salmon |
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| (noun) fatty pinkish flesh of small salmon caught in the Pacific and Great Lakes | Synonyms: coho, coho salmon, silver salmon |
| cohort | (noun) a band of warriors (originally a unit of a Roman Legion) | - |
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| (noun) a company of companions or supporters | - |
| (noun) a group of people having approximately the same age | Synonyms: age bracket, age group |
| cohosh | (noun) a plant of the genus Actaea having acrid poisonous berries | Synonyms: baneberry, herb Christopher |
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| cohune | (noun) tropical American feather palm whose large nuts yield valuable oil and a kind of vegetable ivory | Synonyms: cohune palm, Orbignya cohune |
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| coif | (noun) a skullcap worn by nuns under a veil or by soldiers under a hood of mail or formerly by British sergeants-at-law | - |
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| (noun) the arrangement of the hair (especially a woman's hair) | Synonyms: coiffure, hair style, hairdo, hairstyle |
| coiffeur | (noun) a man hairdresser | - |
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| coiffeuse | (noun) a woman hairdresser | - |
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| coiffure | (noun) the arrangement of the hair (especially a woman's hair) | Synonyms: coif, hair style, hairdo, hairstyle |
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| coign | (noun) the keystone of an arch | Synonyms: coigne, quoin |
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| (noun) expandable metal or wooden wedge used by printers to lock up a form within a chase | Synonyms: coigne, quoin |
| coigne | (noun) the keystone of an arch | Synonyms: coign, quoin |
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| (noun) expandable metal or wooden wedge used by printers to lock up a form within a chase | Synonyms: coign, quoin |
| coil | (noun) a structure consisting of something wound in a continuous series of loops | Synonyms: helix, spiral, volute, whorl |
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| (noun) reactor consisting of a spiral of insulated wire that introduces inductance into a circuit | - |
| (noun) tubing that is wound in a spiral | - |
| (noun) a contraceptive device placed inside a woman's womb | - |
| (noun) a transformer that supplies high voltage to spark plugs in a gasoline engine | - |
| (noun) a round shape formed by a series of concentric circles (as formed by leaves or flower petals) | Synonyms: curl, curlicue, gyre, ringlet, roll, scroll, whorl |
| coin | (noun) a flat metal piece (usually a disc) used as money | - |
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| coinage | (noun) the act of inventing a word or phrase | Synonyms: neologism, neology |
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| (noun) a newly invented word or phrase | Synonyms: neologism, neology |
| (noun) coins collectively | Synonyms: metal money, mintage, specie |
| coincidence | (noun) the temporal property of two things happening at the same time | Synonyms: co-occurrence, concurrence, conjunction |
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| (noun) the quality of occupying the same position or area in space | - |
| (noun) an event that might have been arranged although it was really accidental | Synonyms: happenstance |
| coiner | (noun) a skilled worker who coins or stamps money | Synonyms: minter, moneyer |
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| (noun) someone who is a source of new words or new expressions | - |
| (noun) a maker of counterfeit coins | - |
| coinsurance | (noun) insurance issued jointly by two or more underwriters | - |
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| coir | (noun) stiff coarse fiber from the outer husk of a coconut | - |
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| coition | (noun) sexual activity between individuals, especially the insertion of a man's penis into a woman's vagina until orgasm and ejaculation occur | Synonyms: carnal knowledge, coitus, copulation, intercourse, relation, sex act, sexual congress, sexual intercourse, sexual relation |
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| coitus | (noun) sexual activity between individuals, especially the insertion of a man's penis into a woman's vagina until orgasm and ejaculation occur | Synonyms: carnal knowledge, coition, copulation, intercourse, relation, sex act, sexual congress, sexual intercourse, sexual relation |
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| coke | (noun) street names for cocaine | Synonyms: blow, C, nose candy, snow |
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| (noun) carbon fuel produced by distillation of coal | - |
| col | (noun) a pass between mountain peaks; geomorphological term for the lowest point on a mountain ridge between two peaks | Synonyms: gap |
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| cola | (noun) carbonated drink flavored with extract from kola nuts | Synonyms: dope |
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| colander | (noun) bowl-shaped strainer; used to wash or drain foods | Synonyms: cullender |
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| colchicine | (noun) an analgesic drug derived from the saffron plant and used to treat gout | - |
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| cold | (noun) the absence of heat | Synonyms: coldness, frigidity, frigidness, low temperature |
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| (noun) the sensation produced by low temperatures | Synonyms: coldness |
| (noun) a mild viral infection involving the nose and respiratory passages (but not the lungs) | Synonyms: common cold |