| anarchistic | (adjective) of or related to anarchism or tending toward anarchism | - |
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| anastigmatic | (adjective) not astigmatic | Synonyms: stigmatic |
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| (adjective) pertaining to a lens or lens system free of astigmatism (able to form point images) | Synonyms: stigmatic |
| anastomotic | (adjective) of or relating to or exhibiting anastomosis | - |
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| anchoritic | (adjective) characterized by ascetic solitude | Synonyms: eremitic, eremitical, hermitic, hermitical |
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| androgenetic | (adjective) of or related to androgenesis | Synonyms: androgenous |
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| anecdotic | (adjective) characterized by or given to telling anecdotes | Synonyms: anecdotal, anecdotical |
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| anecdotical | (adjective) characterized by or given to telling anecdotes | Synonyms: anecdotal, anecdotic |
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| anesthetic | (adjective) relating to or producing insensibility | Synonyms: anaesthetic |
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| (adjective) characterized by insensibility | Synonyms: anaesthetic |
| (noun) a drug that causes temporary loss of bodily sensations | Synonyms: anaesthetic, anaesthetic agent, anesthetic agent |
| aneurismatic | (adjective) relating to or affected by an aneurysm | Synonyms: aneurismal, aneurysmal, aneurysmatic |
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| aneurysmatic | (adjective) relating to or affected by an aneurysm | Synonyms: aneurismal, aneurismatic, aneurysmal |
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| animalistic | (adjective) of or pertaining to animalism | - |
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| animatistic | (adjective) of or pertaining to animatism | - |
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| animistic | (adjective) of or pertaining to the doctrine of animism | Synonyms: animist |
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| anisogametic | (adjective) relating to either of a pair of dissimilar (anisogamic) gametes combining in sexual reproduction | - |
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| ankylotic | (adjective) relating to or characteristic of the abnormality ankylosis | - |
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| annalistic | (adjective) relating to annals | - |
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| anorectic | (adjective) causing loss of appetite | Synonyms: anorexigenic |
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| (adjective) suffering from anorexia nervosa; pathologically thin | Synonyms: anorexic |
| (noun) a person suffering from anorexia nervosa | Synonyms: anorexic |
| anorthitic | (adjective) characteristic of anorthite | - |
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| anosmatic | (adjective) relating to an impairment or loss of the sense of smell | Synonyms: anosmic |
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| antagonistic | (adjective) arousing animosity or hostility | - |
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| (adjective) used especially of drugs or muscles that counteract or neutralize each other's effect | Synonyms: incompatible |
| (adjective) characterized by antagonism or antipathy | Synonyms: antipathetic, antipathetical |
| (adjective) incapable of harmonious association | - |
| (adjective) indicating opposition or resistance | Synonyms: counter |
| antagonistically | (adverb) in an antagonistic manner | - |
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| anthelmintic | (adjective) capable of expelling or destroying parasitic worms | Synonyms: anthelminthic, helminthic, parasiticidal |
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| (noun) a medication capable of causing the evacuation of parasitic intestinal worms | Synonyms: anthelminthic, helminthic, vermifuge |
| anthracitic | (adjective) relating to or resembling anthracite coal | - |
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| anthropogenetic | (adjective) of or relating to the study of the origins and development of human beings | Synonyms: anthropogenic |
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| antibiotic | (adjective) of or relating to antibiotic drugs | - |
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| (noun) a chemical substance derivable from a mold or bacterium that can kill microorganisms and cure bacterial infections | Synonyms: antibiotic drug |
| antic | (adjective) ludicrously odd | Synonyms: fantastic, fantastical, grotesque |
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| (noun) a ludicrous or grotesque act done for fun and amusement | Synonyms: caper, joke, prank, put-on, trick |
| (verb) act as or like a clown | Synonyms: clown, clown around |
| anticancer | (adjective) used in the treatment of cancer | Synonyms: antineoplastic, antitumor, antitumour |
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| anticatalyst | (noun) (chemistry) a substance that retards a chemical reaction or diminishes the activity of a catalyst | - |
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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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| anticipant | (adjective) marked by eager anticipation | Synonyms: anticipative, expectant |
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| (noun) one who anticipates | Synonyms: anticipator |
| anticipate | (verb) be a forerunner of or occur earlier than | - |
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| (verb) regard something as probable or likely | Synonyms: expect |
| (verb) realize beforehand | Synonyms: foreknow, foresee, previse |
| (verb) make a prediction about; tell in advance | Synonyms: call, forebode, foretell, predict, prognosticate, promise |
| (verb) be excited or anxious about | Synonyms: look for, look to |
| (verb) act in advance of; deal with ahead of time | Synonyms: counter, foresee, forestall |
| anticipated | (adjective) expected hopefully | Synonyms: awaited, hoped-for |
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| anticipation | (noun) the act of predicting (as by reasoning about the future) | Synonyms: prediction, prevision |
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| (noun) something expected (as on the basis of a norm) | Synonyms: expectancy |
| (noun) an expectation | Synonyms: expectancy |
| (noun) anticipating with confidence of fulfillment | Synonyms: expectation |
| anticipative | (adjective) marked by eager anticipation | Synonyms: anticipant, expectant |
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| anticipator | (noun) one who anticipates | Synonyms: anticipant |
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| anticipatory | (adjective) in anticipation | Synonyms: prevenient |
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| anticlimactic | (adjective) coming after the climax especially of a dramatic or narrative plot | - |
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| (adjective) of or relating to a sudden change from an impressive to a ludicrous style | Synonyms: anticlimactical |
| anticlimactical | (adjective) of or relating to a sudden change from an impressive to a ludicrous style | Synonyms: anticlimactic |
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| anticlimax | (noun) a change from a serious subject to a disappointing one | Synonyms: bathos |
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| (noun) a disappointing decline after a previous rise | - |
| anticlinal | (adjective) sloping downward away from a common crest | - |
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| anticlockwise | (adjective) in the direction opposite to the rotation of the hands of a clock | Synonyms: contraclockwise, counterclockwise |
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| (adverb) in a direction opposite to the direction in which the hands of a clock move | Synonyms: counterclockwise |
| anticoagulant | (noun) medicine that prevents or retards the clotting of blood | Synonyms: anticoagulant medication, decoagulant |
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| anticoagulation | (noun) the administration of an anticoagulant drug to retard coagulation of the blood | - |
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| anticoagulative | (adjective) of or relating to an anticoagulant | - |
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| anticonvulsant | (noun) a drug used to treat or prevent convulsions (as in epilepsy) | Synonyms: anticonvulsant drug, antiepileptic, antiepileptic drug |
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| anticyclone | (noun) (meteorology) winds spiraling outward from a high pressure center; circling clockwise in the Northern Hemisphere and counterclockwise in the southern | - |
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| anticyclonic | (adjective) of or relating to or characteristic of the atmosphere around a high pressure center | - |
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| antidiabetic | (noun) a drug used to treat diabetes mellitus | Synonyms: antidiabetic drug |
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| antidiuretic | (noun) a drug that limits the formation of urine | Synonyms: antidiuretic drug |
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| antiemetic | (noun) a drug that prevents or alleviates nausea and vomiting | Synonyms: antiemetic drug |
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| antiepileptic | (noun) a drug used to treat or prevent convulsions (as in epilepsy) | Synonyms: anticonvulsant, anticonvulsant drug, antiepileptic drug |
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| antiferromagnetic | (adjective) relating to antiferromagnetism | - |
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| antiheretical | (adjective) opposed to heresy | - |
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| antimagnetic | (adjective) impervious to the effects of a magnetic field; resistant to magnetization | - |
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| antimycotic | (noun) any agent that destroys or prevents the growth of fungi | Synonyms: antifungal, antifungal agent, antimycotic agent, fungicide |
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| antineoplastic | (adjective) used in the treatment of cancer | Synonyms: anticancer, antitumor, antitumour |
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| (noun) any of several drugs that control or kill neoplastic cells; used in chemotherapy to kill cancer cells; all have unpleasant side effects that may include nausea and vomiting and hair loss and suppression of bone marrow function | Synonyms: antineoplastic drug, cancer drug |
| 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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| antipathetic | (adjective) (usually followed by `to') strongly opposed | Synonyms: antipathetical, averse, indisposed, loath, loth |
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| (adjective) characterized by antagonism or antipathy | Synonyms: antagonistic, antipathetical |
| antipathetical | (adjective) (usually followed by `to') strongly opposed | Synonyms: antipathetic, averse, indisposed, loath, loth |
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| (adjective) characterized by antagonism or antipathy | Synonyms: antagonistic, antipathetic |
| antiphlogistic | (adjective) counteracting inflammation | - |
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| antipruritic | (noun) a substance that relieves or prevents itching | - |
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| antipsychotic | (noun) tranquilizer used to treat psychotic conditions when a calming effect is desired | Synonyms: antipsychotic agent, antipsychotic drug, major tranquilizer, major tranquilliser, major tranquillizer, neuroleptic, neuroleptic agent, neuroleptic drug |
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| antipyretic | (adjective) preventing or alleviating fever | - |
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| (noun) any medicine that lowers body temperature to prevent or alleviate fever | Synonyms: febrifuge |
| antisemitic | (adjective) relating to or characterized by anti-Semitism; hating Jews | Synonyms: anti-semitic |
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| antiseptic | (adjective) thoroughly clean and free of or destructive to disease-causing organisms | - |
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| (adjective) devoid of objectionable language | - |
| (adjective) clean and honest | - |
| (adjective) freeing from error or corruption | - |
| (noun) a substance that destroys micro-organisms that carry disease without harming body tissues | - |
| antisepticize | (verb) disinfect with an antiseptic | - |
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| antisyphilitic | (noun) a drug (or other chemical agent) that is effective against syphilis | - |
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| antithetic | (adjective) sharply contrasted in character or purpose | Synonyms: antithetical |
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| antithetical | (adjective) sharply contrasted in character or purpose | Synonyms: antithetic |
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| antithetically | (adverb) with antithesis; in an antithetical manner | - |
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| anuretic | (adjective) of or relating to an inability to urinate | Synonyms: anuric |
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| anxiolytic | (adjective) anxiety relieving | - |
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| (noun) a tranquilizer used to relieve anxiety and reduce tension and irritability | Synonyms: antianxiety drug, anxiolytic drug, minor tranquilizer, minor tranquilliser, minor tranquillizer |
| aoristic | (adjective) of or relating to the aorist tense | - |
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| aortic | (adjective) of or relating to the aorta | Synonyms: aortal |
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| apathetic | (adjective) showing little or no emotion or animation | - |
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| (adjective) marked by a lack of interest | Synonyms: indifferent |
| apathetically | (adverb) in an apathetic manner | - |
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| aphaeretic | (adjective) relating to or formed by or consisting of aphaeresis | Synonyms: apheretic |
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| aphanitic | (adjective) of or relating to aphanite | - |
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| apheretic | (adjective) relating to or formed by or consisting of aphaeresis | Synonyms: aphaeretic |
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| aphetic | (adjective) produced by aphesis | - |
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| aphoristic | (adjective) containing aphorisms or maxims | Synonyms: axiomatic |
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| (adjective) terse and witty and like a maxim | Synonyms: apothegmatic, epigrammatic |
| aphotic | (adjective) lacking light; especially not reached by sunlight | - |
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| aplanatic | (adjective) free from or corrected for spherical aberration | - |
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| aplitic | (adjective) of or related to aplite | - |
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| apocalyptic | (adjective) of or relating to an apocalypse | - |
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| (adjective) prophetic of devastation or ultimate doom | Synonyms: apocalyptical, revelatory |
| apocalyptical | (adjective) prophetic of devastation or ultimate doom | Synonyms: apocalyptic, revelatory |
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| apochromatic | (adjective) corrected for both chromatic and spherical aberration | - |
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| apodeictic | (adjective) of a proposition; necessarily true or logically certain | Synonyms: apodictic |
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| apodictic | (adjective) of a proposition; necessarily true or logically certain | Synonyms: apodeictic |
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| apogametic | (adjective) of or relating to the development of an embryo in the absence of fertilization | Synonyms: apogamic, apogamous |
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| apolitical | (adjective) politically neutral | Synonyms: unpolitical |
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| apoliticism | (noun) Apathy and/or antipathy towards all political affiliations. | - |
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| apologetic | (adjective) offering or expressing apology | Synonyms: excusatory |
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| apologetically | (adverb) in an apologetic manner | - |
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| apologetics | (noun) the branch of theology that is concerned with the defense of Christian doctrines | - |
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| apomictic | (adjective) of or relating to a plant that reproduces by apomixis | Synonyms: apomictical |
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| (adjective) (of reproduction) not involving the fusion of male and female gametes in reproduction | Synonyms: agamic, agamogenetic, agamous, parthenogenetic |
| apomictical | (adjective) of or relating to a plant that reproduces by apomixis | Synonyms: apomictic |
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| aponeurotic | (adjective) of or relating to an aponeurosis | - |
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| apopemptic | (adjective) addressed to one who is departing | - |
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