| 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 | - |
| (verb) issue a challenge to | - |
| (verb) take exception to | Synonyms: dispute, gainsay |
| (verb) raise a formal objection in a court of law | Synonyms: take exception |
| (verb) ask for identification | - |
| challengeable | (adjective) capable of being challenged | - |
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| challenger | (noun) the contestant you hope to defeat | Synonyms: competition, competitor, contender, rival |
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| challenging | (adjective) requiring full use of your abilities or resources | Synonyms: ambitious |
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| (adjective) disturbingly provocative | Synonyms: intriguing |
| (adjective) stimulating interest or thought | Synonyms: thought-provoking |
| 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 | - |
| (verb) undergo a change; become different in essence; losing one's or its original nature | - |
| (verb) cause to change; make different; cause a transformation | Synonyms: alter, modify |
| (verb) become different in some particular way, without permanently losing one's or its former characteristics or essence | Synonyms: alter, vary |
| (verb) change clothes; put on different clothes | - |
| (verb) exchange or replace with another, usually of the same kind or category | Synonyms: commute, convert, exchange |
| (verb) lay aside, abandon, or leave for another | Synonyms: shift, switch |
| (verb) remove or replace the coverings of | - |
| (verb) become deeper in tone | Synonyms: deepen |
| (verb) change from one vehicle or transportation line to another | Synonyms: transfer |
| (verb) give to, and receive from, one another | Synonyms: exchange, interchange |
| changeability | (noun) the quality of being changeable; having a marked tendency to change | Synonyms: changeableness |
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| changeable | (adjective) such that alteration is possible; having a marked tendency to change | Synonyms: changeful |
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| (adjective) capable of or tending to change in form or quality or nature | Synonyms: mutable |
| (adjective) varying in color when seen in different lights or from different angles | Synonyms: chatoyant, iridescent, shot |
| (adjective) subject to change | Synonyms: uncertain, unsettled |
| changeableness | (noun) the quality of being changeable; having a marked tendency to change | Synonyms: changeability |
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| changed | (adjective) made or become different in nature or form | - |
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| (adjective) made or become different in some respect | - |
| changeful | (adjective) such that alteration is possible; having a marked tendency to change | Synonyms: changeable |
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| changefulness | (noun) the quality of being changeable and variable | Synonyms: inconstancy |
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| changeless | (adjective) not subject or susceptible to change or variation in form or quality or nature | Synonyms: immutable |
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| (adjective) unvarying in nature | Synonyms: constant, invariant, unvarying |
| (adjective) remaining the same for indefinitely long times | Synonyms: unalterable |
| changelessness | (noun) the quality of being unchangeable; having a marked tendency to remain unchanged | Synonyms: unchangeability, unchangeableness, unchangingness |
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| (noun) the property of remaining unchanged | - |
| changeling | (noun) a child secretly exchanged for another in infancy | - |
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| (noun) a person of subnormal intelligence | Synonyms: cretin, half-wit, idiot, imbecile, moron, retard |
| changeover | (noun) an event that results in a transformation | Synonyms: conversion, transition |
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| changer | (noun) an automatic mechanical device on a record player that causes new records to be played without manual intervention | Synonyms: auto-changer, record changer |
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| (noun) a person who changes something | Synonyms: modifier |
| changing | (adjective) marked by continuous change or effective action | Synonyms: ever-changing |
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| chanting | (noun) the act of singing in a monotonous tone | Synonyms: intonation |
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| charming | (adjective) pleasing or delighting | - |
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| (adjective) possessing or using or characteristic of or appropriate to supernatural powers | Synonyms: magic, magical, sorcerous, witching, wizard, wizardly |
| charmingly | (adverb) in a charming manner | - |
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| chastening | (noun) a rebuke for making a mistake | Synonyms: chastisement, correction |
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| chattering | (noun) the high-pitched continuing noise made by animals (birds or monkeys) | Synonyms: chatter |
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| (noun) the rapid series of noises made by the parts of a machine | Synonyms: chatter |
| cheating | (adjective) violating accepted standards or rules | Synonyms: dirty, foul, unsporting, unsportsmanlike |
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| (adjective) not faithful to a spouse or lover | Synonyms: adulterous, two-timing |
| (noun) a deception for profit to yourself | Synonyms: cheat |
| cheering | (adjective) providing freedom from worry | Synonyms: comforting, satisfying |
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| (noun) encouragement in the form of cheers from spectators | Synonyms: shouting |
| cheesemonger | (noun) someone who sells cheese | - |
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| cheeseparing | (adjective) giving or spending with reluctance | Synonyms: close, near, penny-pinching, skinny |
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| cheesing | (noun) To play a game or sport in a manner that is effective but requires little skill | - |
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| chewing | (noun) biting and grinding food in your mouth so it becomes soft enough to swallow | Synonyms: chew, manduction, mastication |
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| chiding | (noun) rebuking a person harshly | Synonyms: objurgation, scolding, tongue-lashing |
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| childbearing | (adjective) relating to or suitable for childbirth | - |
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| (noun) the parturition process in human beings; having a baby; the process of giving birth to a child | Synonyms: accouchement, childbirth, vaginal birth |
| chilling | (adjective) provoking fear or terror | Synonyms: scary, shivery, shuddery |
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| (noun) the process of becoming cooler; a falling temperature | Synonyms: cooling, temperature reduction |
| chipping | (noun) the act of chipping something | Synonyms: chip, splintering |
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| chitlings | (noun) small intestines of hogs prepared as food | Synonyms: chitlins, chitterlings |
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| chitterlings | (noun) small intestines of hogs prepared as food | Synonyms: chitlings, chitlins |
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| choking | (adjective) causing difficulty in breathing especially through lack of fresh air and presence of heat | Synonyms: smothering, suffocating, suffocative |
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| (noun) the act of suffocating (someone) by constricting the windpipe | Synonyms: strangling, strangulation, throttling |
| (noun) a condition caused by blocking the airways to the lungs (as with food or swelling of the larynx) | - |
| cholangiography | (noun) roentgenographic examination of the bile ducts after a contrast medium has been injected | - |
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| cholangitis | (noun) inflammation of the bile ducts | - |
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| chomping | (noun) the act of chewing noisily | - |
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| choriomeningitis | (noun) a cerebral meningitis with cellular infiltration of the meninges | - |
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| christening | (noun) giving a Christian name at baptism | - |
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| chunga | (noun) Argentinian Cariama | Synonyms: Chunga burmeisteri, seriema |
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| chunking | (noun) (psychology) the configuration of smaller units of information into large coordinated units | Synonyms: unitisation, unitization |
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| churchgoing | (adjective) actively practicing a religion | - |
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| churning | (adjective) (of a liquid) agitated vigorously; in a state of turbulence | Synonyms: roiled, roiling, roily, turbulent |
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| (adjective) moving with or producing or produced by vigorous agitation | Synonyms: churned-up |
| cingulum | (noun) (anatomy) an encircling structure (as the ridge around the base of a tooth) | - |
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| circulating | (adjective) passing from one to another | - |
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| citrange | (noun) more aromatic and acid tasting than oranges; used in beverages and marmalade | - |
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| (noun) more aromatic and acidic than oranges | Synonyms: citrange tree, Citroncirus webberi |
| cladding | (noun) a protective covering that protects the outside of a building | Synonyms: facing |
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| clamoring | (noun) loud and persistent outcry from many people | Synonyms: clamor, clamour, clamouring, hue and cry |
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| clamouring | (noun) loud and persistent outcry from many people | Synonyms: clamor, clamoring, clamour, hue and cry |
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| clang | (noun) a loud resonant repeating noise | Synonyms: clangor, clangoring, clangour, clank, clash, crash |
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| (verb) make a loud noise | Synonyms: clangor |
| clanger | (noun) a conspicuous mistake whose effects seem to reverberate | - |
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| clanging | (adjective) having a loud resonant metallic sound | Synonyms: clangorous |
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| clangor | (noun) a loud resonant repeating noise | Synonyms: clang, clangoring, clangour, clank, clash, crash |
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| (verb) make a loud resonant noise | Synonyms: clangour |
| (verb) make a loud noise | Synonyms: clang |
| clangoring | (noun) a loud resonant repeating noise | Synonyms: clang, clangor, clangour, clank, clash, crash |
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| clangorous | (adjective) having a loud resonant metallic sound | Synonyms: clanging |
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| clangour | (noun) a loud resonant repeating noise | Synonyms: clang, clangor, clangoring, clank, clash, crash |
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| (verb) make a loud resonant noise | Synonyms: clangor |
| clanking | (adjective) having a hard nonresonant metallic sound | - |
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| clapping | (noun) a demonstration of approval by clapping the hands together | Synonyms: applause, hand clapping |
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| clarifying | (adjective) that makes clear | Synonyms: elucidative |
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| clashing | (adjective) sharply and harshly discordant | - |
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| cleaning | (noun) the act of making something clean | Synonyms: cleansing, cleanup |
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| cleansing | (adjective) acting like an antiseptic | Synonyms: purifying |
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| (adjective) cleansing the body by washing; especially ritual washing of e.g. hands | Synonyms: ablutionary |
| (noun) the act of making something clean | Synonyms: cleaning, cleanup |
| clearing | (noun) the act of freeing from suspicion | - |
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| (noun) the act of removing solid particles from a liquid | Synonyms: clarification |
| (noun) a tract of land with few or no trees in the middle of a wooded area | Synonyms: glade |
| clerking | (noun) the activity of recording business transactions | Synonyms: bookkeeping |
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| cliffhanger | (noun) an episode that ends in suspense | - |
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| (noun) a contest whose outcome is uncertain up to the very end | - |
| climbing | (noun) an event that involves rising to a higher point (as in altitude or temperature or intensity etc.) | Synonyms: climb, mounting |
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| cling | (noun) fruit (especially peach) whose flesh adheres strongly to the pit | Synonyms: clingstone |
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| (verb) come or be in close contact with; stick or hold together and resist separation | Synonyms: adhere, cleave, cohere, stick |
| (verb) hold on tightly or tenaciously | Synonyms: hang |
| (verb) to remain emotionally or intellectually attached | - |
| clingfilm | (noun) a thin plastic film made of saran (trade name Saran Wrap) that sticks to itself; used for wrapping food | Synonyms: cling film, Saran Wrap |
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| clingfish | (noun) very small (to 3 inches) flattened marine fish with a sucking disc on the abdomen for clinging to rocks etc. | - |
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| clingstone | (noun) fruit (especially peach) whose flesh adheres strongly to the pit | Synonyms: cling |
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| clingy | (adjective) excessively emotional and attached | - |
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| clinking | (adjective) like the light sharp ringing sound of glasses being tapped | - |
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| clipping | (noun) the act of clipping or snipping | Synonyms: clip, snip |
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| (noun) cutting down to the desired size or shape | Synonyms: trim, trimming |
| (noun) an excerpt cut from a newspaper or magazine | Synonyms: cutting, newspaper clipping, press clipping, press cutting |
| clocking | (noun) the time taken to traverse a measured course | - |
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| clogging | (adjective) preventing movement | Synonyms: hindering, impeding, obstructive |
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| cloning | (noun) a general term for the research activity that creates a copy of some biological entity (a gene or organism or cell) | - |
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| clopping | (noun) the sound of a horse's hoofs hitting on a hard surface | Synonyms: clip-clop, clippety-clop, clop, clumping, clunking |
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| closing | (adjective) final or ending | - |
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| (noun) termination of operations | Synonyms: closedown, closure, shutdown |
| (noun) the act of closing something | Synonyms: shutting |
| (noun) a concluding action | Synonyms: completion, culmination, mop up, windup |
| (noun) approaching a particular destination; a coming closer; a narrowing of a gap | Synonyms: closure |
| (noun) the last section of a communication | Synonyms: close, conclusion, end, ending |
| clothing | (noun) a covering designed to be worn on a person's body | Synonyms: article of clothing, habiliment, vesture, wear, wearable |
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| clotting | (noun) the process of forming semisolid lumps in a liquid | Synonyms: coagulation, curdling |
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| clouding | (noun) the process whereby water particles become visible in the sky | Synonyms: clouding up |
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| clowning | (noun) acting like a clown or buffoon | Synonyms: buffoonery, frivolity, harlequinade, japery, prank |
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| (noun) a comic incident or series of incidents | Synonyms: comedy, drollery, funniness |
| cloying | (adjective) overly sweet | Synonyms: saccharine, syrupy, treacly |
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| cloyingly | (adverb) in an overly sweet manner | - |
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| clubbing | (noun) a condition in which the ends of toes and fingers become wide and thick; a symptom of heart or lung disease | - |
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| clucking | (noun) the sound made by a hen (as in calling her chicks) | Synonyms: cluck |
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| clumping | (noun) the sound of a horse's hoofs hitting on a hard surface | Synonyms: clip-clop, clippety-clop, clop, clopping, clunking |
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| clunking | (noun) the sound of a horse's hoofs hitting on a hard surface | Synonyms: clip-clop, clippety-clop, clop, clopping, clumping |
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| clustering | (noun) a grouping of a number of similar things | Synonyms: bunch, clump, cluster |
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| coaching | (noun) the job of a professional coach | Synonyms: coaching job |
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| coalescing | (adjective) growing together, fusing | Synonyms: coalescent |
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| coaming | (noun) a raised framework around a hatchway on a ship to keep water out | - |
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| coating | (noun) the work of applying something | Synonyms: application, covering |
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| (noun) a thin layer covering something | Synonyms: coat |
| (noun) a heavy fabric suitable for coats | - |
| (noun) a decorative texture or appearance of a surface (or the substance that gives it that appearance) | Synonyms: finish, finishing |
| coaxing | (adjective) pleasingly persuasive or intended to persuade | Synonyms: ingratiatory |
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| (noun) flattery designed to gain favor | Synonyms: blarney, soft soap, sweet talk |
| coaxingly | (adverb) in a cajoling manner | Synonyms: cajolingly |
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| cobbling | (noun) the shoemaker's trade | Synonyms: shoe repairing, shoemaking |
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| cockfighting | (noun) participation in the sport of matching gamecocks in a cockfight | - |
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| cocooning | (noun) retreating to the seclusion of your home (as for privacy or escape) | - |
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| coding | (noun) act of writing in code or cipher | Synonyms: cryptography, secret writing, steganography |
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