| 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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| annotator | (noun) a commentator who writes notes to a text | - |
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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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| annualry | (noun) the third finger (especially of the left hand) | Synonyms: ring finger |
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| annunciator | (noun) an indicator that announces which electrical circuit has been active (as on a telephone switchboard) | - |
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| anoestrum | (noun) applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus | Synonyms: anestrum, anestrus, anoestrus |
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| anoestrus | (noun) applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus | Synonyms: anestrum, anestrus, anoestrum |
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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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| anorak | (noun) a kind of heavy jacket | Synonyms: parka, windbreaker, windcheater |
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| anorchia | (noun) absence of one of both testes | Synonyms: anorchidism, anorchism |
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| anorchidism | (noun) absence of one of both testes | Synonyms: anorchia, anorchism |
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| anorchism | (noun) absence of one of both testes | Synonyms: anorchia, anorchidism |
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| anorectic | (noun) a person suffering from anorexia nervosa | Synonyms: anorexic |
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| anorexia | (noun) a prolonged disorder of eating due to loss of appetite | - |
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| anorexic | (noun) a person suffering from anorexia nervosa | Synonyms: anorectic |
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| anorgasmia | (noun) absence of an orgasm in sexual relations | - |
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| anorthite | (noun) rare plagioclastic feldspar occurring in many igneous rocks | - |
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| anorthography | (noun) a loss of the ability to write or to express thoughts in writing because of a brain lesion | Synonyms: agraphia, logagraphia |
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| anorthopia | (noun) distorted vision in which straight lines appear curved | - |
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| 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 | - |
| answerability | (noun) responsibility to someone or for some activity | Synonyms: accountability, answerableness |
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| 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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| antbird | (noun) any of various dull-colored South American birds that feeding on ants some following army ant swarms | Synonyms: ant bird |
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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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| anterior | (noun) a tooth situated at the front of the mouth | Synonyms: front tooth |
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| 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 |
| 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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| 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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| anthracite | (noun) a hard natural coal that burns slowly and gives intense heat | Synonyms: anthracite coal, hard coal |
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| anthracosis | (noun) lung disease caused by inhaling coal dust | Synonyms: black lung, black lung disease, coal miner's lung |
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| anthrax | (noun) a highly infectious animal disease (especially cattle and sheep); it can be transmitted to people | Synonyms: splenic fever |
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| (noun) a disease of humans that is not communicable; caused by infection with Bacillus anthracis followed by septicemia | - |
| anthropocentricity | (noun) an inclination to evaluate reality exclusively in terms of human values | Synonyms: anthropocentrism |
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| anthropocentrism | (noun) an inclination to evaluate reality exclusively in terms of human values | Synonyms: anthropocentricity |
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| anthropogenesis | (noun) the evolution or genesis of the human race | Synonyms: anthropogeny |
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| anthropogeny | (noun) the evolution or genesis of the human race | Synonyms: anthropogenesis |
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| anthropoid | (noun) any member of the suborder Anthropoidea including monkeys and apes and hominids | - |
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| (noun) person who resembles a nonhuman primate | Synonyms: ape |
| anthropolatry | (noun) the worship of human beings | Synonyms: worship of man |
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| anthropologism | (noun) a point of view in which human nature is exhaustively determined by the culture in which a person lives, leaving no room for human agency. | - |
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| anthropologist | (noun) a social scientist who specializes in anthropology | - |
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| anthropology | (noun) the social science that studies the origins and social relationships of human beings | - |
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| anthropometry | (noun) measurement and study of the human body and its parts and capacities | - |
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| anthropomorphism | (noun) the representation of objects (especially a god) as having human form or traits | Synonyms: theanthropism |
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| anthropopathism | (noun) Attribution of human feelings to things not human, such as inanimate objects, animals, or natural phenomena. | - |
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| anthropophagite | (noun) a person who eats human flesh | Synonyms: anthropophagus, cannibal, man-eater |
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| anthropophagus | (noun) a person who eats human flesh | Synonyms: anthropophagite, cannibal, man-eater |
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| anthropophagy | (noun) human cannibalism; the eating of human flesh | - |
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| anthroposophy | (noun) a system of beliefs and practices based on the philosophy of Rudolf Steiner; it claims to integrate the practical and psychological in child-centered education | - |
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| anthurium | (noun) any of various tropical American plants cultivated for their showy foliage and flowers | Synonyms: tail-flower, tailflower |
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| antiaircraft | (noun) artillery designed to shoot upward at airplanes | Synonyms: ack-ack, ack-ack gun, antiaircraft gun, flack, flak, pom-pom |
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| antiarrhythmic | (noun) a drug used to treat an abnormal heart rhythm | Synonyms: antiarrhythmic drug, antiarrhythmic medication |
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| antibacterial | (noun) any drug that destroys bacteria or inhibits their growth | Synonyms: antibacterial drug, bactericide |
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| antibaryon | (noun) the antiparticle of a baryon; a hadron with a baryon number of -1 | - |
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| anticholinergic | (noun) a substance that opposes or blocks the action of acetylcholine | Synonyms: anticholinergic drug |
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| anticholinesterase | (noun) a medicine that inhibits cholinesterase by combining with it and so has a cholinergic effect | - |
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| anticipator | (noun) one who anticipates | Synonyms: anticipant |
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| antidepressant | (noun) any of a class of drugs used to treat depression; often have undesirable side effects | Synonyms: antidepressant drug |
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| antidiarrheal | (noun) a drug used to control or stop diarrhea | Synonyms: antidiarrheal drug |
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| antidiuretic | (noun) a drug that limits the formation of urine | Synonyms: antidiuretic drug |
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| antielectron | (noun) an elementary particle with positive charge; interaction of a positron and an electron results in annihilation | Synonyms: positron |
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| antiestablishmentarianism | (noun) the doctrine of opposition to the social and political establishment | Synonyms: antiestablishmentism |
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| antiferromagnet | (noun) any material that has antiferromagnetic properties. | - |
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| antiferromagnetism | (noun) magnetic field creates parallel but opposing spins; varies with temperature | - |
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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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| antifreeze | (noun) a liquid added to the water in a cooling system to lower its freezing point | - |
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| antigram | (noun) an anagram that means the opposite of the original word or phrase | - |
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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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| antilogarithm | (noun) the number of which a given number is the logarithm | Synonyms: antilog |
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| antimacassar | (noun) a piece of ornamented cloth that protects the back of a chair from hair oils | - |
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| antimalarial | (noun) a medicinal drug used to prevent or treat malaria | Synonyms: antimalarial 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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| antimicrobial | (noun) an agent (as heat or radiation or a chemical) that destroys microorganisms that might carry disease | Synonyms: antimicrobic, disinfectant, germicide |
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| antimicrobic | (noun) an agent (as heat or radiation or a chemical) that destroys microorganisms that might carry disease | Synonyms: antimicrobial, disinfectant, germicide |
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| antineutrino | (noun) the antiparticle of a neutrino | - |
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| antineutron | (noun) the antiparticle of a neutron | - |
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| antiparticle | (noun) a particle that has the same mass as another particle but has opposite values for its other properties; interaction of a particle and its antiparticle results in annihilation and the production of radiant energy | - |
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| antiperspirant | (noun) an astringent substance applied to the skin to reduce perspiration | - |
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| antiphonary | (noun) bound collection of antiphons | Synonyms: antiphonal |
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| antiphrasis | (noun) the use of a word in a sense opposite to its normal sense (especially in irony) | - |
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| antiproton | (noun) an unstable negatively charged proton; the antiparticle of a proton | - |
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| antiprotozoal | (noun) a medicinal drug used to fight diseases (like malaria) that are caused by protozoa | Synonyms: antiprotozoal drug |
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| antipruritic | (noun) a substance that relieves or prevents itching | - |
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| antipyresis | (noun) medication with antipyretics to treat a fever | - |
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| antipyretic | (noun) any medicine that lowers body temperature to prevent or alleviate fever | Synonyms: febrifuge |
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| antiquarian | (noun) an expert or collector of antiquities | Synonyms: antiquary, archaist |
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| antiquark | (noun) the antiparticle of a quark | - |
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| antiquary | (noun) an expert or collector of antiquities | Synonyms: antiquarian, archaist |
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| antiredeposition | (noun) the process of preventing redeposition | - |
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| antireligiousness | (noun) The state or condition of being opposed to religion. | - |
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| antiserum | (noun) blood serum containing antibodies against specific antigens; provides immunity to a disease | - |
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| antistrophe | (noun) the section of a choral ode answering a previous strophe in classical Greek drama; the second of two metrically corresponding sections in a poem | - |
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| antitrade | (noun) winds blowing from west to east and lying above the trade winds in the tropics | Synonyms: antitrade wind |
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| antitrades | (noun) wind in the upper atmosphere blowing above but in the opposite direction from the trade winds | - |
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