| abampere | (noun) a unit of current equal to 10 amperes | Synonyms: abamp |
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| abjure | (verb) formally reject or disavow a formerly held belief, usually under pressure | Synonyms: forswear, recant, resile, retract |
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| accoutre | (verb) provide with military equipment | Synonyms: accouter |
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| acquire | (verb) come to have or undergo a change of (physical features and attributes) | Synonyms: develop, get, grow, produce |
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| (verb) take on a certain form, attribute, or aspect | Synonyms: adopt, assume, take, take on |
| (verb) gain through experience | Synonyms: develop, evolve |
| (verb) gain knowledge or skills | Synonyms: larn, learn |
| (verb) come into the possession of something concrete or abstract | Synonyms: get |
| (verb) win something through one's efforts | Synonyms: gain, win |
| (verb) locate (a moving entity) by means of a tracking system such as radar | - |
| acre | (noun) a unit of area (4840 square yards) used in English-speaking countries | - |
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| acupressure | (noun) treatment of symptoms by applying pressure with the fingers to specific pressure points on the body | Synonyms: G-Jo, shiatsu |
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| acupuncture | (noun) treatment of pain or disease by inserting the tips of needles at specific points on the skin | Synonyms: stylostixis |
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| adhere | (verb) follow through or carry out a plan without deviation | - |
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| (verb) stick to firmly | Synonyms: bind, bond, hold fast, stick, stick to |
| (verb) come or be in close contact with; stick or hold together and resist separation | Synonyms: cleave, cling, cohere, stick |
| (verb) be compatible or in accordance with | - |
| (verb) be loyal to | Synonyms: stand by, stick, stick by |
| (verb) be a devoted follower or supporter | Synonyms: stick |
| adjure | (verb) command solemnly | - |
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| (verb) ask for or request earnestly | Synonyms: beseech, bid, conjure, entreat, press |
| admeasure | (verb) determine the quantity of someone's share | - |
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| admire | (verb) feel admiration for | Synonyms: look up to |
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| (verb) look at with admiration | - |
| admixture | (noun) the act of mixing together | Synonyms: commixture, intermixture, mix, mixing, mixture |
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| (noun) an additional ingredient that is added by mixing with the base | Synonyms: intermixture |
| (noun) the state of impairing the quality or reducing the value of something | Synonyms: alloy |
| adore | (verb) love intensely | - |
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| adventure | (noun) a wild and exciting undertaking (not necessarily lawful) | Synonyms: dangerous undertaking, escapade, risky venture |
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| (verb) put at risk | Synonyms: hazard, jeopardize, stake, venture |
| (verb) take a risk in the hope of a favorable outcome | Synonyms: chance, gamble, hazard, risk, run a risk, take a chance, take chances |
| aeciospore | (noun) spore of a rust fungus formed in an aecium | - |
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| affaire | (noun) a usually secretive or illicit sexual relationship | Synonyms: affair, amour, intimacy, involvement, liaison |
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| afire | (adjective) lighted up by or as by fire or flame | Synonyms: ablaze, aflame, aflare, alight, on fire |
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| aflare | (adjective) lighted up by or as by fire or flame | Synonyms: ablaze, afire, aflame, alight, on fire |
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| (adjective) streaming or flapping or spreading wide as if in a current of air | Synonyms: flaring |
| aftercare | (noun) care and treatment of a convalescent patient | - |
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| agateware | (noun) pottery that is veined and mottled to resemble agate | - |
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| agriculture | (noun) the practice of cultivating the land or raising stock | Synonyms: farming, husbandry |
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| (noun) a large-scale farming enterprise | Synonyms: agribusiness, factory farm |
| (noun) the class of people engaged in growing food | - |
| airfare | (noun) the fare charged for traveling by airplane | - |
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| albacore | (noun) large pelagic tuna the source of most canned tuna; reaches 93 pounds and has long pectoral fins; found worldwide in tropical and temperate waters | Synonyms: long-fin tunny, Thunnus alalunga |
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| (noun) relatively small tuna with choice white flesh; major source of canned tuna | - |
| allure | (noun) the power to entice or attract through personal charm | Synonyms: allurement, temptingness |
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| (verb) dispose or incline or entice to | Synonyms: tempt |
| ampere | (noun) the basic unit of electric current adopted under the Systeme International d'Unites | Synonyms: A, amp |
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| (noun) a former unit of electric current (slightly smaller than the SI ampere) | Synonyms: international ampere |
| amphitheatre | (noun) an oval large stadium with tiers of seats; an arena in which contests and spectacles are held | Synonyms: amphitheater, coliseum |
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| (noun) a sloping gallery with seats for spectators (as in an operating room or theater) | Synonyms: amphitheater |
| antheridiophore | (noun) gametophore bearing antheridia as in certain mosses and liverworts | - |
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| anymore | (adverb) at the present or from now on; usually used with a negative | Synonyms: any longer |
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| anywhere | (adverb) at or in or to any place | Synonyms: anyplace |
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| aperture | (noun) an man-made opening; usually small | - |
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| (noun) a device that controls amount of light admitted | - |
| (noun) a natural opening in something | - |
| apiculture | (noun) the cultivation of bees on a commercial scale for the production of honey | Synonyms: beekeeping |
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| apishamore | (noun) a saddle blanket made of buffalo hide | - |
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| aquaculture | (noun) rearing aquatic animals or cultivating aquatic plants for food | - |
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| aquiculture | (noun) a technique of growing plants (without soil) in water containing dissolved nutrients | Synonyms: hydroponics, tank farming |
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| arboriculture | (noun) the tending of and caring for trees | Synonyms: tree farming |
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| archespore | (noun) primitive cell or group of cells from which a mother cell develops | Synonyms: archesporium |
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| architecture | (noun) the profession of designing buildings and environments with consideration for their esthetic effect | - |
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| (noun) an architectural product or work | - |
| (noun) (computer science) the structure and organization of a computer's hardware or system software | Synonyms: computer architecture |
| (noun) the discipline dealing with the principles of design and construction and ornamentation of fine buildings | - |
| are | (noun) a unit of surface area equal to 100 square meters | Synonyms: ar |
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| arere | (noun) large west African tree having large palmately lobed leaves and axillary cymose panicles of small white flowers and one-winged seeds; yields soft white to pale yellow wood | Synonyms: obeche, obechi, samba, Triplochiton scleroxcylon |
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| armature | (noun) coil in which voltage is induced by motion through a magnetic field | - |
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| armoire | (noun) a large wardrobe or cabinet; originally used for storing weapons | - |
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| arthromere | (noun) any of the segments in the body of a jointed animal like an arthropod | - |
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| arthrospore | (noun) one of a string of thick walled vegetative resting cells formed by some algae and fungi | - |
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| (noun) a body that resembles a spore but is not an endospore; produced by some bacteria | - |
| ascospore | (noun) sexually produced fungal spore formed within an ascus | - |
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| ashore | (adverb) towards the shore from the water | - |
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| aspire | (verb) have an ambitious plan or a lofty goal | Synonyms: aim, draw a bead on, shoot for |
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| assure | (verb) be careful or certain to do something; make certain of something | Synonyms: ascertain, check, control, ensure, insure, see, see to it |
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| (verb) inform positively and with certainty and confidence | Synonyms: tell |
| (verb) assure somebody of the truth of something with the intention of giving the listener confidence | - |
| (verb) make a promise or commitment | Synonyms: promise |
| (verb) make certain of | Synonyms: ensure, guarantee, insure, secure |
| asthenosphere | (noun) the lower layer of the crust | - |
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| atmosphere | (noun) a distinctive but intangible quality surrounding a person or thing | Synonyms: air, aura |
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| (noun) the mass of air surrounding the Earth | Synonyms: air |
| (noun) the envelope of gases surrounding any celestial body | - |
| (noun) a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade | Synonyms: atm, standard atmosphere, standard pressure |
| (noun) the weather or climate at some place | Synonyms: atmospheric state |
| (noun) a particular environment or surrounding influence | Synonyms: ambiance, ambience |
| attire | (noun) clothing of a distinctive style or for a particular occasion | Synonyms: dress, garb |
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| (verb) put on special clothes to appear particularly appealing and attractive | Synonyms: deck out, deck up, dress up, fancy up, fig out, fig up, get up, gussy up, overdress, prink, rig out, tog out, tog up, trick out, trick up |
| auriculare | (noun) the craniometric point at the center of the opening of the external acoustic meatus | Synonyms: auricular point |
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| austere | (adjective) practicing great self-denial | Synonyms: ascetic, ascetical, spartan |
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| (adjective) of a stern or strict bearing or demeanor; forbidding in aspect | Synonyms: stern |
| (adjective) severely simple | Synonyms: severe, stark, stern |
| aware | (adjective) (sometimes followed by `of') having or showing knowledge or understanding or realization or perception | Synonyms: cognisant, cognizant |
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| (adjective) bearing in mind; attentive to | Synonyms: mindful |
| azure | (adjective) of a deep somewhat purplish blue color similar to that of a clear October sky | Synonyms: bright blue, cerulean, sky-blue |
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| (noun) a light shade of blue | Synonyms: cerulean, lazuline, sapphire, sky-blue |
| (verb) color azure | - |
| backfire | (noun) a miscalculation that recoils on its maker | Synonyms: boomerang |
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| (noun) a loud noise made by the explosion of fuel in the manifold or exhaust of an internal combustion engine | - |
| (noun) the backward escape of gases and unburned gunpowder after a gun is fired | Synonyms: blowback |
| (noun) a fire that is set intentionally in order to slow an approaching forest fire or grassfire by clearing a burned area in its path | - |
| (verb) set a controlled fire to halt an advancing forest to prairie fire | - |
| (verb) emit a loud noise as a result of undergoing a backfire | - |
| (verb) come back to the originator of an action with an undesired effect | Synonyms: backlash, recoil |
| balefire | (noun) a large outdoor fire that is lighted as a signal or in celebration | Synonyms: bonfire |
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| barbwire | (noun) strong wire with barbs at regular intervals used to prevent passage | Synonyms: barbed wire |
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| bare | (adjective) lacking its natural or customary covering | - |
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| (adjective) not having a protective covering | Synonyms: unsheathed |
| (adjective) having everything extraneous removed including contents | Synonyms: stripped |
| (adjective) providing no shelter or sustenance | Synonyms: barren, bleak, desolate, stark |
| (adjective) lacking in magnitude or quantity | Synonyms: scanty, spare |
| (adjective) just barely adequate or within a lower limit | Synonyms: marginal |
| (adjective) apart from anything else; without additions or modifications | Synonyms: mere, simple |
| (adjective) lacking embellishment or ornamentation | Synonyms: plain, spare, unembellished, unornamented |
| (adjective) having no clothes on the body | Synonyms: au naturel, naked, nude |
| (adjective) lacking a surface finish such as paint | Synonyms: unfinished |
| (verb) lay bare | Synonyms: denudate, denude, strip |
| (verb) make public | Synonyms: air, publicise, publicize |
| (verb) expose to view | - |
| basidiospore | (noun) a sexually produced fungal spore borne on a basidium | - |
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| bathysphere | (noun) spherical deep diving apparatus (lowered by a cable) for underwater exploration | - |
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| battledore | (noun) an ancient racket game | Synonyms: battledore and shuttlecock |
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| (noun) a light long-handled racket used by badminton players | Synonyms: badminton racket, badminton racquet |
| bedsore | (noun) a chronic ulcer of the skin caused by prolonged pressure on it (as in bedridden patients) | Synonyms: decubitus ulcer, pressure sore |
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| before | (adverb) at or in the front | Synonyms: ahead, in front |
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| (adverb) earlier in time; previously | Synonyms: earlier |
| belvedere | (noun) a gazebo sited to command a fine view | - |
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| (noun) densely branched Eurasian plant; foliage turns purple-red in autumn | Synonyms: Bassia scoparia, burning bush, fire-bush, fire bush, Kochia scoparia, summer cypress |
| bemire | (verb) make soiled, filthy, or dirty | Synonyms: begrime, colly, dirty, grime, soil |
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| beware | (verb) be on one's guard; be cautious or wary about; be alert to | Synonyms: mind |
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| billionaire | (noun) a very rich person whose material wealth is valued at more than a billion dollars | - |
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| biosphere | (noun) the regions of the surface and atmosphere of the Earth (or other planet) where living organisms exist | - |
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| bistre | (noun) a water-soluble brownish-yellow pigment made by boiling wood soot | Synonyms: bister |
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| bizarre | (adjective) conspicuously or grossly unconventional or unusual | Synonyms: eccentric, flakey, flaky, freakish, freaky, gonzo, off-the-wall, outlandish, outre |
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| blare | (noun) a loud harsh or strident noise | Synonyms: blaring, cacophony, clamor, din |
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| (verb) make a strident noise | Synonyms: beep, claxon, honk, toot |
| (verb) make a strident sound | Synonyms: blast |
| blastomere | (noun) any cell resulting from cleavage of a fertilized egg | - |
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| blastopore | (noun) the opening into the archenteron | - |
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| blastosphere | (noun) early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs | Synonyms: blastula |
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| bonfire | (noun) a large outdoor fire that is lighted as a signal or in celebration | Synonyms: balefire |
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| bookstore | (noun) a shop where books are sold | Synonyms: bookshop, bookstall |
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| bore | (noun) a hole or passage made by a drill; usually made for exploratory purposes | Synonyms: bore-hole, drill hole |
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| (noun) diameter of a tube or gun barrel | Synonyms: caliber, calibre, gauge |
| (noun) a high wave (often dangerous) caused by tidal flow (as by colliding tidal currents or in a narrow estuary) | Synonyms: aegir, eager, eagre, tidal bore |
| (noun) a person who evokes boredom | Synonyms: dullard |
| (verb) make a hole, especially with a pointed power or hand tool | Synonyms: drill |
| (verb) cause to be bored | Synonyms: tire |
| boutonniere | (noun) a flower that is worn in a buttonhole | - |
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| brassiere | (noun) an undergarment worn by women to support their breasts | Synonyms: bandeau, bra |
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| brochure | (noun) a small book usually having a paper cover | Synonyms: booklet, folder, leaflet, pamphlet |
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| broodmare | (noun) a female horse used for breeding | Synonyms: stud mare |
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| byre | (noun) a barn for cows | Synonyms: cow barn, cowbarn, cowhouse, cowshed |
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| cadastre | (noun) a public register showing the details of ownership and value of land; made for the purpose of taxation | Synonyms: cadaster |
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| cadre | (noun) a nucleus of military personnel capable of expansion | - |
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| (noun) a small unit serving as part of or as the nucleus of a larger political movement | Synonyms: cell |
| caffre | (noun) an offensive and insulting term for any Black African | Synonyms: caffer, kaffir, kafir |
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| calibre | (noun) a degree or grade of excellence or worth | Synonyms: caliber, quality |
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| (noun) diameter of a tube or gun barrel | Synonyms: bore, caliber, gauge |
| campfire | (noun) a small outdoor fire for warmth or cooking (as at a camp) | - |
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| candidature | (noun) the campaign of a candidate to be elected | Synonyms: campaigning, candidacy, electioneering, political campaign |
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| capture | (noun) the act of forcibly dispossessing an owner of property | Synonyms: gaining control, seizure |
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| (noun) the act of taking of a person by force | Synonyms: seizure |
| (noun) the removal of an opponent's piece from the chess board | - |
| (noun) any process in which an atomic or nuclear system acquires an additional particle | - |
| (noun) a process whereby a star or planet holds an object in its gravitational field | - |
| (verb) capture as if by hunting, snaring, or trapping | Synonyms: catch |
| (verb) succeed in catching or seizing, especially after a chase | Synonyms: catch, get |
| (verb) succeed in representing or expressing something intangible | - |
| (verb) attract; cause to be enamored | Synonyms: becharm, beguile, bewitch, captivate, catch, charm, enamor, enamour, enchant, entrance, fascinate, trance |
| (verb) take possession of by force, as after an invasion | Synonyms: appropriate, conquer, seize |
| (verb) bring about the capture of an elementary particle or celestial body and causing it enter a new orbit | - |
| care | (noun) activity involved in maintaining something in good working order | Synonyms: maintenance, upkeep |
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| (noun) the work of providing treatment for or attending to someone or something | Synonyms: aid, attention, tending |
| (noun) attention and management implying responsibility for safety | Synonyms: charge, guardianship, tutelage |
| (noun) judiciousness in avoiding harm or danger | Synonyms: caution, forethought, precaution |
| (noun) a cause for feeling concern | - |
| (noun) an anxious feeling | Synonyms: concern, fear |
| (verb) to hope, to desire or to prefer to have something, or to do something | Synonyms: like, wish |
| (verb) feel concern or interest | - |
| (verb) be concerned with | Synonyms: worry |
| (verb) be in charge of, act on, or dispose of | Synonyms: deal, handle, manage |
| (verb) provide care for | Synonyms: give care |
| carfare | (noun) the fare charged for riding a bus or streetcar | Synonyms: bus fare |
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| caricature | (noun) a representation of a person that is exaggerated for comic effect | Synonyms: imitation, impersonation |
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| (verb) represent in or produce a caricature of | Synonyms: ape |
| carnivore | (noun) a terrestrial or aquatic flesh-eating mammal | - |
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| (noun) any animal that feeds on flesh | - |
| carpophore | (noun) a slender stalk that furnishes an axis for a carpel | - |
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| carpospore | (noun) a nonmotile spore of red algae | - |
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| cashmere | (noun) a soft fabric made from the wool of the Cashmere goat | - |
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| (noun) the wool of the Kashmir goat | - |
| caviare | (noun) salted roe of sturgeon or other large fish; usually served as an hors d'oeuvre | Synonyms: caviar |
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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 |
| (verb) rebuke formally | Synonyms: criminate, reprimand |
| 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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| centilitre | (noun) a metric unit of volume equal to one hundredth of a liter | Synonyms: centiliter, cl |
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