| angered | (adjective) marked by extreme anger | Synonyms: enraged, furious, infuriated, maddened |
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| angiopteris | (noun) highly variable species of very large primitive ferns of the Pacific tropical areas with high rainfall | Synonyms: Angiopteris evecta, giant fern |
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| angiosperm | (noun) plants having seeds in a closed ovary | Synonyms: flowering plant |
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| angiospermous | (adjective) of or related to or characteristic of plants that are angiosperms | - |
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| angledozer | (noun) a bulldozer with an angled moldboard to push earth to one side | - |
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| angler | (noun) fishes having large mouths with a wormlike filament attached for luring prey | Synonyms: allmouth, angler fish, anglerfish, goosefish, Lophius Americanus, lotte, monkfish |
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| (noun) a fisherman who uses a hook and line | Synonyms: troller |
| (noun) a scheming person; someone who schemes to gain an advantage | - |
| anglerfish | (noun) fishes having large mouths with a wormlike filament attached for luring prey | Synonyms: allmouth, angler, angler fish, goosefish, Lophius Americanus, lotte, monkfish |
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| anicteric | (adjective) without jaundice | - |
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| (adjective) not affected by jaundice | - |
| animadversion | (noun) harsh criticism or disapproval | Synonyms: censure |
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| animadvert | (verb) express one's opinion openly and without fear or hesitation | Synonyms: opine, sound off, speak out, speak up |
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| (verb) express blame or censure or make a harshly critical remark | - |
| anniversary | (noun) the date on which an event occurred in some previous year (or the celebration of it) | Synonyms: day of remembrance |
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| announcer | (noun) reads news, commercials on radio or television | - |
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| (noun) someone who proclaims a message publicly | - |
| annoyer | (noun) someone given to teasing (as by mocking or stirring curiosity) | Synonyms: tease, teaser, vexer |
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| anointer | (noun) one who anoints as a religious ceremony | - |
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| anomalopteryx | (noun) the smallest moa; slender moa about the size of a large turkey | Synonyms: Anomalopteryx oweni |
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| anoperineal | (adjective) relating to the anus and surrounding perineum | - |
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| another | (adjective) any of various alternatives; some other; entity, singular, other pronoun; quantifier, singular, another | Synonyms: some other |
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| anserine | (adjective) of or resembling a goose | - |
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| (adjective) having or revealing stupidity | Synonyms: dopey, dopy, foolish, gooselike, goosey, goosy, jerky |
| answer | (noun) a nonverbal reaction | - |
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| (noun) the speech act of replying to a question | - |
| (noun) a statement (either spoken or written) that is made to reply to a question or request or criticism or accusation | Synonyms: reply, response |
| (noun) a statement that solves a problem or explains how to solve the problem | Synonyms: resolution, result, solution, solvent |
| (noun) the principal pleading by the defendant in response to plaintiff's complaint; in criminal law it consists of the defendant's plea of `guilty' or `not guilty' (or nolo contendere); in civil law it must contain denials of all allegations in the plaintiff's complaint that the defendant hopes to controvert and it can contain affirmative defenses or counterclaims | - |
| (verb) give the correct answer or solution to | - |
| (verb) respond to a signal | - |
| (verb) understand the meaning of | Synonyms: resolve |
| (verb) react to a stimulus or command | - |
| (verb) react verbally | Synonyms: reply, respond |
| (verb) give a defence or refutation of (a charge) or in (an argument) | - |
| (verb) be satisfactory for; meet the requirements of or serve the purpose of | - |
| (verb) match or correspond | - |
| (verb) be liable or accountable | - |
| (verb) be sufficient; be adequate, either in quality or quantity | Synonyms: do, serve, suffice |
| answerability | (noun) responsibility to someone or for some activity | Synonyms: accountability, answerableness |
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| answerable | (adjective) morally or legally responsible to a higher authority | - |
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| (adjective) capable of being answered | - |
| (adjective) liable to account for one's actions | Synonyms: accountable |
| answerableness | (noun) responsibility to someone or for some activity | Synonyms: accountability, answerability |
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| answerer | (noun) someone who responds | Synonyms: respondent, responder |
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| answering | (adjective) replying | Synonyms: respondent |
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| anteater | (noun) any of several tropical American mammals of the family Myrmecophagidae which lack teeth and feed on ants and termites | Synonyms: New World anteater |
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| (noun) nocturnal burrowing mammal of the grasslands of Africa that feeds on termites; sole extant representative of the order Tubulidentata | Synonyms: aardvark, ant bear, Orycteropus afer |
| (noun) a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to Australia | Synonyms: echidna, spiny anteater |
| (noun) a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to New Guinea | Synonyms: echidna, spiny anteater |
| (noun) toothless mammal of southern Africa and Asia having a body covered with horny scales and a long snout for feeding on ants and termites | Synonyms: pangolin, scaly anteater |
| (noun) small Australian marsupial having long snout and strong claws for feeding on termites; nearly extinct | Synonyms: banded anteater, Myrmecobius fasciatus, numbat |
| antechamber | (noun) a large entrance or reception room or area | Synonyms: anteroom, entrance hall, foyer, hall, lobby, vestibule |
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| antemeridian | (adjective) before noon | - |
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| anterior | (adjective) of or near the head end or toward the front plane of a body | - |
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| (adjective) earlier in time | Synonyms: prior |
| (noun) a tooth situated at the front of the mouth | Synonyms: front tooth |
| anteriority | (noun) the quality of being in front or (in lower animals) toward the head | - |
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| (noun) preceding in time | Synonyms: antecedence, antecedency, precedence, precedency, priority |
| anteriorly | (adverb) in an anterior direction | - |
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| anterograde | (adjective) of amnesia; affecting time immediately following trauma | - |
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| anteroom | (noun) a large entrance or reception room or area | Synonyms: antechamber, entrance hall, foyer, hall, lobby, vestibule |
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| anther | (noun) the part of the stamen that contains pollen; usually borne on a stalk | - |
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| antheral | (adjective) capable of fertilizing female organs | Synonyms: staminate |
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| antheridial | (adjective) relating to or characterized by an antheridium | - |
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| antheridiophore | (noun) gametophore bearing antheridia as in certain mosses and liverworts | - |
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| antheridium | (noun) the male sex organ of spore-producing plants; produces antherozoids; equivalent to the anther in flowers | - |
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| antherozoid | (noun) a motile male gamete of a plant such as an alga or fern or gymnosperm | Synonyms: spermatozoid |
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| antiadrenergic | (adjective) relating to blocking or reducing adrenergic effects in the body | - |
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| antibacterial | (adjective) destroying bacteria or inhibiting their growth | - |
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| (noun) any drug that destroys bacteria or inhibits their growth | Synonyms: antibacterial drug, bactericide |
| anticancer | (adjective) used in the treatment of cancer | Synonyms: antineoplastic, antitumor, antitumour |
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| anticholinergic | (adjective) inhibiting or blocking the action of acetylcholine at a receptor site | - |
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| (noun) a substance that opposes or blocks the action of acetylcholine | Synonyms: anticholinergic drug |
| anticholinesterase | (noun) a medicine that inhibits cholinesterase by combining with it and so has a cholinergic effect | - |
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| antiferromagnet | (noun) any material that has antiferromagnetic properties. | - |
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| antiferromagnetic | (adjective) relating to antiferromagnetism | - |
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| antiferromagnetism | (noun) magnetic field creates parallel but opposing spins; varies with temperature | - |
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| antifertility | (adjective) capable of preventing conception or impregnation | Synonyms: contraceptive, prophylactic |
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| antifertilizin | (noun) An immunologically specific substance produced by animal sperm to implement attraction by the egg before fertilization. | - |
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| antiheretical | (adjective) opposed to heresy | - |
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| antihero | (noun) a protagonist who lacks the characteristics that would make him a hero (or her a heroine) | - |
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| antihypertensive | (noun) a drug that reduces high blood pressure | Synonyms: antihypertensive drug |
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| antimatter | (noun) matter consisting of elementary particles that are the antiparticles of those making up normal substances | - |
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| antipersonnel | (adjective) designed to inflict death or personal injury rather than material destruction | - |
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| antiperspirant | (noun) an astringent substance applied to the skin to reduce perspiration | - |
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| antiserum | (noun) blood serum containing antibodies against specific antigens; provides immunity to a disease | - |
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| antler | (noun) deciduous horn of a member of the deer family | - |
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| antlered | (adjective) having antlers | - |
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| anywhere | (adverb) at or in or to any place | Synonyms: anyplace |
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| aper | (noun) someone who copies the words or behavior of another | Synonyms: ape, copycat, emulator, imitator |
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| apercu | (noun) a short synopsis | - |
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| aperea | (noun) South American cavy; possibly ancestral to the domestic guinea pig | Synonyms: Cavia porcellus, wild cavy |
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| aperient | (adjective) mildly laxative | - |
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| (noun) a purging medicine; stimulates evacuation of the bowels | Synonyms: cathartic, physic, purgative |
| aperiodic | (adjective) not recurring at regular intervals | Synonyms: nonperiodic |
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| aperitif | (noun) alcoholic beverage taken before a meal as an appetizer | - |
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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 | - |
| apery | (noun) the act of mimicking; imitative behavior | Synonyms: mimicry |
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| aphaeresis | (noun) (linguistics) omission at the beginning of a word as in `coon' for `raccoon' or `till' for `until' | Synonyms: apheresis |
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| aphaeretic | (adjective) relating to or formed by or consisting of aphaeresis | Synonyms: apheretic |
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| apheresis | (noun) a procedure in which blood is drawn and separated into its components by dialysis; some are retained and the rest are returned to the donor by transfusion | Synonyms: pheresis |
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| (noun) (linguistics) omission at the beginning of a word as in `coon' for `raccoon' or `till' for `until' | Synonyms: aphaeresis |
| apheretic | (adjective) relating to or formed by or consisting of aphaeresis | Synonyms: aphaeretic |
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| appeaser | (noun) someone who tries to bring peace by acceding to demands | - |
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| apperceive | (verb) perceive in terms of a past experience | - |
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| apperception | (noun) the process whereby perceived qualities of an object are related to past experience | - |
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| apperceptive | (adjective) able to relate new percepts to past experience | - |
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| appertain | (verb) be a part or attribute of | Synonyms: pertain |
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| appetiser | (noun) food or drink to stimulate the appetite (usually served before a meal or as the first course) | Synonyms: appetizer, starter |
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| appetizer | (noun) food or drink to stimulate the appetite (usually served before a meal or as the first course) | Synonyms: appetiser, starter |
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| applauder | (noun) someone who applauds | Synonyms: clapper |
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| applier | (noun) a device for applying a substance | Synonyms: applicator |
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| (noun) a person who requests or seeks something such as assistance or employment or admission | Synonyms: applicant |
| appraiser | (noun) one who estimates officially the worth or value or quality of things | Synonyms: valuator |
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| (noun) one who determines authenticity (as of works of art) or who guarantees validity | Synonyms: authenticator |
| apprehender | (noun) a person who seizes or arrests (especially a person who seizes or arrests in the name of justice) | - |
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| (noun) a person who knows or apprehends | Synonyms: knower |
| approver | (noun) an authority with power to approve | - |
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| apteral | (adjective) having columns at one or both ends but not along the sides | - |
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| (adjective) (of insects) without wings | Synonyms: apterous |
| apterous | (adjective) (of insects) without wings | Synonyms: apteral |
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| apteryx | (noun) nocturnal flightless bird of New Zealand having a long neck and stout legs; only surviving representative of the order Apterygiformes | Synonyms: kiwi |
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| aquifer | (noun) underground bed or layer yielding ground water for wells and springs etc | - |
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| aquiferous | (adjective) of or relating to an aquifer | - |
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| arbiter | (noun) someone chosen to judge and decide a disputed issue | Synonyms: arbitrator, umpire |
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| (noun) someone with the power to settle matters at will | Synonyms: supreme authority |
| arbitrager | (noun) someone who engages in arbitrage (who purchases securities in one market for immediate resale in another in the hope of profiting from the price differential) | Synonyms: arb, arbitrageur |
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| archaebacteria | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacterium, archaeobacteria, archeobacteria |
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| archaebacterium | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacteria, archaeobacteria, archeobacteria |
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| archaeobacteria | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacteria, archaebacterium, archeobacteria |
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| archaeopteryx | (noun) extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds | Synonyms: Archaeopteryx lithographica, archeopteryx |
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| archenteron | (noun) central cavity of the gastrula; becomes the intestinal or digestive cavity | - |
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| archeobacteria | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacteria, archaebacterium, archaeobacteria |
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| archeopteryx | (noun) extinct primitive toothed bird of the Jurassic period having a long feathered tail and hollow bones; usually considered the most primitive of all birds | Synonyms: archaeopteryx, Archaeopteryx lithographica |
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| archer | (noun) a person who is expert in the use of a bow and arrow | Synonyms: bowman |
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| archerfish | (noun) any of several small freshwater fishes that catch insects by squirting water at them and knocking them into the water; found in Indonesia and Australia | Synonyms: Toxotes jaculatrix |
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| archery | (noun) the sport of shooting arrows with a bow | - |
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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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