| charter | (noun) a document incorporating an institution and specifying its rights; includes the articles of incorporation and the certificate of incorporation | - |
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| (noun) a contract to hire or lease transportation | - |
| chatter | (noun) noisy talk | Synonyms: cackle, yack, yak, yakety-yak |
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| (noun) the high-pitched continuing noise made by animals (birds or monkeys) | Synonyms: chattering |
| (noun) the rapid series of noises made by the parts of a machine | Synonyms: chattering |
| cheater | (noun) someone who leads you to believe something that is not true | Synonyms: beguiler, cheat, deceiver, slicker, trickster |
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| choirmaster | (noun) the musical director of a choir | Synonyms: cantor, precentor |
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| chorister | (noun) a singer in a choir | - |
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| chronometer | (noun) an accurate clock (especially used in navigation) | - |
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| clatter | (noun) a rattling noise (often produced by rapid movement) | - |
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| clinometer | (noun) an instrument used by surveyors in order to measure an angle of inclination or elevation | Synonyms: inclinometer |
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| cloister | (noun) residence that is a place of religious seclusion (such as a monastery) | Synonyms: religious residence |
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| (noun) a courtyard with covered walks (as in religious institutions) | - |
| cluster | (noun) a grouping of a number of similar things | Synonyms: bunch, clump, clustering |
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| clutter | (noun) unwanted echoes that interfere with the observation of signals on a radar screen | - |
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| (noun) a confused multitude of things | Synonyms: fuddle, jumble, mare's nest, muddle, smother, welter |
| clyster | (noun) an injection of a liquid through the anus to stimulate evacuation; sometimes used for diagnostic purposes | Synonyms: enema |
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| coaster | (noun) a covering (plate or mat) that protects the surface of a table (i.e., from the condensation on a cold glass or bottle) | - |
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| (noun) someone who coasts | - |
| (noun) a resident of a coastal area | - |
| colorimeter | (noun) a measuring instrument used in colorimetric analysis to determine the quantity of a substance from the color it yields with specific reagents | Synonyms: tintometer |
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| colter | (noun) a sharp steel wedge that precedes the plow and cuts vertically through the soil | Synonyms: coulter |
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| comforter | (noun) bedding made of two layers of cloth filled with stuffing and stitched together | Synonyms: comfort, puff, quilt |
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| (noun) device used for an infant to suck or bite on | Synonyms: baby's dummy, pacifier, teething ring |
| (noun) a person who commiserates with someone who has had misfortune | Synonyms: sympathiser, sympathizer |
| (noun) a person who reduces the intensity (e.g., of fears) and calms and pacifies | Synonyms: allayer, reliever |
| commuter | (noun) a passenger train that is ridden primarily by passengers who travel regularly from one place to another | Synonyms: commuter train |
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| (noun) someone who travels regularly from home in a suburb to work in a city | - |
| computer | (noun) a machine for performing calculations automatically | Synonyms: computing device, computing machine, data processor, electronic computer, information processing system |
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| (noun) an expert at calculation (or at operating calculating machines) | Synonyms: calculator, estimator, figurer, reckoner |
| confuter | (noun) a debater who refutes or disproves by offering contrary evidence or argument | Synonyms: disprover, rebutter, refuter |
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| connecter | (noun) an instrumentality that connects | Synonyms: connection, connective, connector, connexion |
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| contester | (noun) someone who contests an outcome (of a race or an election etc.) | - |
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| converter | (noun) a device for changing one substance or form or state into another | Synonyms: convertor |
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| cooter | (noun) large river turtle of the southern United States and northern Mexico | Synonyms: Pseudemys concinna, river cooter |
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| copywriter | (noun) a person employed to write advertising or publicity copy | - |
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| cotoneaster | (noun) any shrub of the genus Cotoneaster: erect or creeping shrubs having richly colored autumn foliage and many small white to pinkish flowers followed by tiny red or black fruits | - |
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| 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 |
| coulter | (noun) a sharp steel wedge that precedes the plow and cuts vertically through the soil | Synonyms: colter |
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| 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 | - |
| counterfeiter | (noun) someone who makes copies illegally | Synonyms: forger |
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| crafter | (noun) a creator of great skill in the manual arts | Synonyms: craftsman |
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| craniometer | (noun) an instrument for measuring skull sizes | - |
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| crapshooter | (noun) a gambler who plays the game of craps | - |
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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 |
| cricketer | (noun) an athlete who plays cricket | - |
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| critter | (noun) a regional term for `creature' (especially for domestic animals) | - |
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| crofter | (noun) an owner or tenant of a small farm in Great Britain | - |
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| cryometer | (noun) a thermometer designed to measure low temperatures | - |
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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 |
| 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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| 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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| daughter | (noun) a female human offspring | Synonyms: girl |
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| debater | (noun) someone who engages in debate | Synonyms: arguer |
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| decaliter | (noun) a metric unit of volume or capacity equal to 10 liters | Synonyms: dal, decalitre, dekaliter, dekalitre, dkl |
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| decameter | (noun) a metric unit of length equal to ten meters | Synonyms: dam, decametre, dekameter, dekametre, dkm |
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| decanter | (noun) a bottle with a stopper; for serving wine or water | Synonyms: carafe |
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| deciliter | (noun) a metric unit of volume equal to one tenth of a liter | Synonyms: decilitre, dl |
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| decimeter | (noun) a metric unit of length equal to one tenth of a meter | Synonyms: decimetre, dm |
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| declinometer | (noun) an instrument for measuring magnetic declination | Synonyms: transit declinometer |
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| defaulter | (noun) a contestant who forfeits a match | - |
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| (noun) someone who fails to meet a financial obligation | Synonyms: deadbeat |
| (noun) someone who fails to make a required appearance in court | - |
| defroster | (noun) heater that removes ice or frost (as from a windshield or a refrigerator or the wings of an airplane) | Synonyms: deicer |
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| dekaliter | (noun) a metric unit of volume or capacity equal to 10 liters | Synonyms: dal, decaliter, decalitre, dekalitre, dkl |
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| dekameter | (noun) a metric unit of length equal to ten meters | Synonyms: dam, decameter, decametre, dekametre, dkm |
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| demister | (noun) heater that removes mist from the windshield of a car | - |
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| densimeter | (noun) a measuring instrument for determining density or specific gravity | Synonyms: densitometer |
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| densitometer | (noun) a measuring instrument for determining optical or photographic density | - |
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| (noun) a measuring instrument for determining density or specific gravity | Synonyms: densimeter |
| departer | (noun) someone who leaves | Synonyms: goer, leaver |
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| deserter | (noun) a person who abandons their duty (as on a military post) | Synonyms: defector |
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| (noun) a disloyal person who betrays or deserts his cause or religion or political party or friend etc. | Synonyms: apostate, ratter, recreant, renegade, turncoat |
| diameter | (noun) the length of a straight line passing through the center of a circle and connecting two points on the circumference | Synonyms: diam |
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| (noun) a straight line connecting the center of a circle with two points on its perimeter (or the center of a sphere with two points on its surface) | - |
| dieter | (noun) a person who diets | - |
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| digester | (noun) autoclave consisting of a vessel in which plant or animal materials are digested | - |
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| dilater | (noun) a surgical instrument that is used to dilate or distend an opening or an organ | Synonyms: dilator |
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| diopter | (noun) a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters; used by oculists | Synonyms: dioptre |
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| disaster | (noun) an act that has disastrous consequences | - |
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| (noun) an event resulting in great loss and misfortune | Synonyms: calamity, cataclysm, catastrophe, tragedy |
| (noun) a state of extreme (usually irremediable) ruin and misfortune | Synonyms: catastrophe |
| discounter | (noun) a sales outlet offering goods at a discounted price | Synonyms: discount house, discount store, wholesale house |
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| dishwater | (noun) water in which dishes and cooking utensils are washed | - |
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| dissenter | (noun) a person who dissents from some established policy | Synonyms: contestant, dissident, objector, protester |
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| distributer | (noun) electrical device that distributes voltage to the spark plugs of a gasoline engine in the order of the firing sequence | Synonyms: distributor, electrical distributor |
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| (noun) someone who markets merchandise | Synonyms: distributor |
| dogfighter | (noun) a fighter pilot who engages in an aerial dogfights | - |
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| dosemeter | (noun) a measuring instrument for measuring doses of ionizing radiation (X-rays or radioactivity) | Synonyms: dosimeter |
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| dosimeter | (noun) a measuring instrument for measuring doses of ionizing radiation (X-rays or radioactivity) | Synonyms: dosemeter |
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| doubter | (noun) someone who habitually doubts accepted beliefs | Synonyms: sceptic, skeptic |
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| (noun) someone who is doubtful or noncommittal about something | Synonyms: agnostic |
| drafter | (noun) a writer of a draft | - |
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| drifter | (noun) a wanderer who has no established residence or visible means of support | Synonyms: clochard, floater, vagabond, vagrant |
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| drumbeater | (noun) a fervent and even militant proponent of something | Synonyms: partisan, zealot |
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| dumbwaiter | (noun) a small elevator used to convey food (or other goods) from one floor of a building to another | Synonyms: food elevator |
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| durometer | (noun) An instrument for measuring the degree of hardness; especially, an instrument for testing the relative hardness of steel rails and the like. | - |
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| duster | (noun) a pitch thrown deliberately close to the batter | - |
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| (noun) a loose coverall (coat or frock) reaching down to the ankles | Synonyms: dust coat, gabardine, gaberdine, smock |
| (noun) a piece of cloth used for dusting | Synonyms: dustcloth, dustrag |
| (noun) a windstorm that lifts up clouds of dust or sand | Synonyms: dust storm, sandstorm, sirocco |
| dynamiter | (noun) a person who uses dynamite in a revolutionary cause | Synonyms: dynamitist |
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| dynamometer | (noun) measuring instrument designed to measure power | Synonyms: ergometer |
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| easter | (noun) a wind from the east | Synonyms: east wind, easterly |
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| eater | (noun) any green goods that are good to eat | - |
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| (noun) someone who consumes food for nourishment | Synonyms: feeder |
| effecter | (noun) one who brings about a result or event; one who accomplishes a purpose | Synonyms: effector |
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| eggbeater | (noun) a mixer for beating eggs or whipping cream | Synonyms: eggwhisk |
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| (noun) an aircraft without wings that obtains its lift from the rotation of overhead blades | Synonyms: chopper, helicopter, whirlybird |
| eighter | (noun) the cardinal number that is the sum of seven and one | Synonyms: 8, eight, eighter from Decatur, octad, octet, octonary, ogdoad, VIII |
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| elater | (noun) any of various widely distributed beetles | Synonyms: elaterid, elaterid beetle |
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| electrodynamometer | (noun) measuring instrument that uses the interaction of the magnetic fields of two coils to measure current or voltage or power | - |
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| electrometer | (noun) meter to measure electrostatic voltage differences; draws no current from the source | - |
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| electroplater | (noun) a plater who uses electrolysis | - |
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| emitter | (noun) the electrode in a transistor where electrons originate | - |
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| enchanter | (noun) a sorcerer or magician | - |
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| encounter | (noun) a minor short-term fight | Synonyms: brush, clash, skirmish |
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| (noun) a casual meeting with a person or thing | Synonyms: coming upon |
| (noun) a hostile disagreement face-to-face | Synonyms: confrontation, face-off, showdown |
| (noun) a casual or unexpected convergence | Synonyms: meeting |
| epicenter | (noun) the point on the Earth's surface directly above the focus of an earthquake | Synonyms: epicentre |
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| ergometer | (noun) measuring instrument designed to measure power | Synonyms: dynamometer |
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| eriometer | (noun) An instrument for measuring the diameters of minute particles or fibers, from the size of the colored rings produced by the diffraction of the light in which the objects are viewed. | - |
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| ester | (noun) organic compound formed by reaction between an acid and an alcohol with elimination of water | - |
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| eudiometer | (noun) measuring instrument consisting of a graduated glass tube for measuring volume changes in chemical reactions between gases | - |
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| evaporometer | (noun) an instrument that measures rate of evaporation of water | Synonyms: atmometer |
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| experimenter | (noun) a research worker who conducts experiments | - |
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| (noun) a person who enjoys testing innovative ideas | - |
| exploiter | (noun) a person who uses something or someone selfishly or unethically | Synonyms: user |
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