| affidavit | (noun) written declaration made under oath; a written statement sworn to be true before someone legally authorized to administer an oath | - |
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| affiliate | (noun) a subsidiary or subordinate organization that is affiliated with another organization | - |
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| (noun) a subordinate or subsidiary associate; a person who is affiliated with another or with an organization | - |
| (verb) join in an affiliation | - |
| (verb) keep company with; hang out with | Synonyms: associate, assort, consort |
| affiliated | (adjective) being joined in close association | Synonyms: attached, connected |
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| affiliation | (noun) the act of becoming formally connected or joined | - |
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| (noun) a social or business relationship | Synonyms: association, tie-up, tie |
| affinal | (adjective) (anthropology) related by marriage | Synonyms: affine |
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| affine | (adjective) (mathematics) of or pertaining to the geometry of affine transformations | - |
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| (adjective) (anthropology) related by marriage | Synonyms: affinal |
| (noun) (anthropology) kin by marriage | - |
| affined | (adjective) closely related | - |
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| affinity | (noun) inherent resemblance between persons or things | - |
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| (noun) a natural attraction or feeling of kinship | - |
| (noun) the force attracting atoms to each other and binding them together in a molecule | Synonyms: chemical attraction |
| (noun) (immunology) the attraction between an antigen and an antibody | - |
| (noun) (anthropology) kinship by marriage or adoption; not a blood relationship | - |
| (noun) (biology) state of relationship between organisms or groups of organisms resulting in resemblance in structure or structural parts | Synonyms: phylogenetic relation |
| (noun) a close connection marked by community of interests or similarity in nature or character | Synonyms: kinship |
| affirm | (verb) establish or strengthen as with new evidence or facts | Synonyms: confirm, corroborate, substantiate, support, sustain |
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| (verb) to declare or affirm solemnly and formally as true | Synonyms: assert, aver, avow, swan, swear, verify |
| (verb) say yes to | - |
| affirmable | (adjective) capable of being affirmed or asserted | Synonyms: assertable |
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| affirmation | (noun) a judgment by a higher court that the judgment of a lower court was correct and should stand | - |
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| (noun) a statement asserting the existence or the truth of something | Synonyms: avouchment, avowal |
| (noun) (religion) a solemn declaration that serves the same purpose as an oath (if an oath is objectionable to the person on religious or ethical grounds) | - |
| (noun) the act of affirming or asserting or stating something | Synonyms: assertion, statement |
| affirmative | (adjective) affirming or giving assent | Synonyms: affirmatory |
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| (adjective) expressing or manifesting praise or approval | Synonyms: approbative, approbatory, approving, plausive |
| (adjective) expecting the best | Synonyms: optimistic |
| (noun) a reply of affirmation | - |
| affirmatively | (adverb) in an affirmative manner | - |
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| affirmativeness | (noun) the agreeable quality of one who assents | - |
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| affirmatory | (adjective) affirming or giving assent | Synonyms: affirmative |
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| affirmer | (noun) someone who claims to speak the truth | Synonyms: asserter, asseverator, avower, declarer |
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| affix | (noun) a linguistic element added to a word to produce an inflected or derived form | - |
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| (verb) stick or fasten to | Synonyms: stick on |
| (verb) add to the very end | Synonyms: add on, append, supplement |
| (verb) attach or become attached to a stem word | - |
| affixal | (adjective) of or pertaining to a linguistic affix | Synonyms: affixial |
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| affixation | (noun) formation of a word by means of an affix | - |
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| (noun) the act of attaching or affixing something | Synonyms: attachment |
| (noun) the result of adding an affix to a root word | - |
| affixed | (adjective) firmly attached | - |
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| affixial | (adjective) of or pertaining to a linguistic affix | Synonyms: affixal |
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| afflatus | (noun) a strong creative impulse; divine inspiration | - |
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| afflict | (verb) cause physical pain or suffering in | Synonyms: smite |
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| (verb) cause great unhappiness for; distress | - |
| afflicted | (adjective) grievously affected especially by disease | Synonyms: stricken |
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| (adjective) mentally or physically unfit | Synonyms: impaired |
| affliction | (noun) a cause of great suffering and distress | - |
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| (noun) a condition of suffering or distress due to ill health | - |
| (noun) a state of great suffering and distress due to adversity | - |
| afflictive | (adjective) causing misery or pain or distress | Synonyms: painful, sore |
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| affluence | (noun) abundant wealth | Synonyms: richness |
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| affluent | (adjective) having an abundant supply of money or possessions of value | Synonyms: flush, loaded, moneyed, substantial, wealthy |
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| (noun) a branch that flows into the main stream | Synonyms: confluent, feeder, tributary |
| (noun) an affluent person; a person who is financially well off | - |
| affluenza | (noun) an inability to understand the consequences of one's actions because of financial privilege | - |
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| afford | (verb) be able to spare or give up | - |
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| (verb) be the cause or source of | Synonyms: give, yield |
| (verb) afford access to | Synonyms: give, open |
| (verb) have the financial means to do something or buy something | - |
| affordable | (adjective) that you have the financial means for | Synonyms: low-cost, low-priced |
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| afforest | (verb) establish a forest on previously unforested land | Synonyms: forest |
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| afforestation | (noun) the conversion of bare or cultivated land into forest (originally for the purpose of hunting) | - |
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| affranchise | (verb) grant freedom to; as from slavery or servitude | Synonyms: enfranchise |
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| affray | (noun) a noisy fight | Synonyms: disturbance, fray, ruffle |
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| (noun) noisy quarrel | Synonyms: altercation, fracas |
| affricate | (noun) a composite speech sound consisting of a stop and a fricative articulated at the same point (as `ch' in `chair' and `j' in `joy') | Synonyms: affricate consonant, affricative |
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| affrication | (noun) the conversion of a simple stop consonant into an affricate | - |
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| affricative | (noun) a composite speech sound consisting of a stop and a fricative articulated at the same point (as `ch' in `chair' and `j' in `joy') | Synonyms: affricate, affricate consonant |
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| affright | (noun) an overwhelming feeling of fear and anxiety | Synonyms: panic, terror |
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| (verb) cause fear in | Synonyms: fright, frighten, scare |
| affront | (noun) a deliberately offensive act or something producing the effect of deliberate disrespect | Synonyms: insult |
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| (verb) treat, mention, or speak to rudely | Synonyms: diss, insult |
| affusion | (noun) the act of baptizing someone by pouring water on their head | - |
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| afghan | (noun) a blanket knitted or crocheted in strips or squares; sometimes used as a shawl | - |
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| (noun) a coat made of sheepskin | Synonyms: sheepskin coat |
| afghani | (noun) the basic unit of money in Afghanistan | - |
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| afibrinogenemia | (noun) the absence of fibrinogen in the plasma leading to prolonged bleeding | - |
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| aficionado | (noun) a serious devotee of some particular music genre or musical performer | - |
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| (noun) a fan of bull fighting | - |
| afield | (adverb) off the subject; beyond the point at issue | - |
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| (adverb) in or into a field (especially a field of battle) | - |
| (adverb) far away from home or one's usual surroundings | Synonyms: abroad |
| afire | (adjective) lighted up by or as by fire or flame | Synonyms: ablaze, aflame, aflare, alight, on fire |
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| aflame | (adjective) lighted up by or as by fire or flame | Synonyms: ablaze, afire, aflare, alight, on fire |
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| (adjective) keenly excited (especially sexually) or indicating excitement | Synonyms: ablaze, aroused |
| 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 |
| aflatoxin | (noun) a potent carcinogen from the fungus Aspergillus; can be produced and stored for use as a bioweapon | - |
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| aflicker | (adjective) shining unsteadily | Synonyms: flickering |
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| afloat | (adjective) borne on the water; floating | - |
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| (adjective) covered with water | Synonyms: awash, flooded, inundated, overflowing |
| (adjective) aimlessly drifting | Synonyms: adrift, aimless, directionless, planless, rudderless, undirected |
| aflutter | (adjective) excited in anticipation | Synonyms: nervous |
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| afoot | (adjective) currently in progress | Synonyms: underway |
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| (adjective) traveling by foot | - |
| (adverb) on foot; walking | - |
| aforementioned | (adjective) being the one previously mentioned or spoken of | Synonyms: aforesaid, said |
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| aforesaid | (adjective) being the one previously mentioned or spoken of | Synonyms: aforementioned, said |
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| aforethought | (adjective) with planning and intention | Synonyms: planned, plotted |
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| afoul | (adjective) especially of a ship's lines etc | Synonyms: foul, fouled |
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| afraid | (adjective) filled with fear or apprehension | - |
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| (adjective) filled with regret or concern; used often to soften an unpleasant statement | - |
| (adjective) having feelings of aversion or unwillingness | - |
| (adjective) feeling worry or concern or insecurity | - |
| afresh | (adverb) again but in a new or different way | Synonyms: anew |
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| afropavo | (noun) both sexes are brightly colored | Synonyms: Afropavo congensis, Congo peafowl |
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| aft | (adjective) (nautical, aeronautical) situated at or toward the stern or tail | - |
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| (adverb) at or near or toward the stern of a ship or tail of an airplane | Synonyms: abaft, astern |
| after | (adjective) located farther aft | - |
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| (adverb) behind or in the rear | - |
| (adverb) happening at a time subsequent to a reference time | Synonyms: afterward, afterwards, later, later on, subsequently |
| afterbirth | (noun) the placenta and fetal membranes that are expelled from the uterus after the baby is born | - |
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| afterburner | (noun) a device that injects fuel into a hot exhaust for extra thrust | - |
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| aftercare | (noun) care and treatment of a convalescent patient | - |
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| afterdamp | (noun) a toxic mixture of gases (including carbon dioxide and carbon monoxide and nitrogen) after an explosion of firedamp in a mine | - |
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| afterdeck | (noun) a deck abaft of midships | - |
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| aftereffect | (noun) any result that follows its cause after an interval | - |
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| (noun) a delayed effect of a drug or therapy | - |
| afterglow | (noun) the pleasure of remembering some pleasant event | - |
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| (noun) a glow sometimes seen in the sky after sunset | - |
| afterimage | (noun) an image (usually a negative image) that persists after stimulation has ceased | Synonyms: aftersensation |
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| afterlife | (noun) life after death | Synonyms: hereafter |
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| aftermath | (noun) the outcome of an event especially as relative to an individual | Synonyms: consequence |
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| (noun) the consequences of an event (especially a catastrophic event) | Synonyms: backwash, wake |
| aftermost | (adjective) located closest to the stern or tail | - |
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| afternoon | (noun) a conventional expression of greeting or farewell, used to wish someone a good afternoon | Synonyms: good afternoon |
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| (noun) the part of the day between noon and evening | - |
| afterpains | (noun) pains felt by a woman after her baby is born; associated with contractions of the uterus | - |
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| afterpiece | (noun) a brief dramatic piece (usually comic) presented after a play | - |
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| afters | (noun) a dish served as the last course of a meal | Synonyms: dessert, sweet |
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| aftersensation | (noun) an image (usually a negative image) that persists after stimulation has ceased | Synonyms: afterimage |
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| aftershaft | (noun) a supplementary feather (usually small) on the underside of the base of the shaft of some feathers in some birds | - |
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| aftershafted | (adjective) having an aftershaft (a small feather at the base of some feathers) | - |
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| aftershock | (noun) a tremor (or one of a series of tremors) occurring after the main shock of an earthquake | - |
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| aftertaste | (noun) an afterimage of a taste | - |
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| afterthought | (noun) an addition that was not included in the original plan | - |
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| (noun) thinking again about a choice previously made | Synonyms: reconsideration, rethink, second thought |
| afterward | (adverb) happening at a time subsequent to a reference time | Synonyms: after, afterwards, later, later on, subsequently |
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| afterwards | (adverb) happening at a time subsequent to a reference time | Synonyms: after, afterward, later, later on, subsequently |
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| afterworld | (noun) the place where you are after you die | - |
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| again | (adverb) anew | Synonyms: once again, once more, over again |
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| agal | (noun) a cord (usually of goat's hair) that Arabs (especially Bedouins) wind around their heads to hold down the kaffiyeh | - |
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| agalactia | (noun) a condition in which milk is not secreted in the mother's breasts after her child has been delivered | Synonyms: agalactosis |
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| agalactosis | (noun) a condition in which milk is not secreted in the mother's breasts after her child has been delivered | Synonyms: agalactia |
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| agama | (noun) small terrestrial lizard of warm regions of the Old World | - |
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| agamete | (noun) an asexual reproductive cell | - |
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| agamic | (adjective) (of reproduction) not involving the fusion of male and female gametes in reproduction | Synonyms: agamogenetic, agamous, apomictic, parthenogenetic |
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| agamid | (noun) a lizard of the family Agamidae | Synonyms: agamid lizard |
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| agammaglobulinemia | (noun) a rare immunological disorder characterized by the virtual absence of gamma globulin in the blood and consequent susceptibility to infection | - |
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| agamogenesis | (noun) reproduction without the fusion of gametes | Synonyms: asexual reproduction |
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| agamogenetic | (adjective) (of reproduction) not involving the fusion of male and female gametes in reproduction | Synonyms: agamic, agamous, apomictic, parthenogenetic |
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| agamous | (adjective) (of reproduction) not involving the fusion of male and female gametes in reproduction | Synonyms: agamic, agamogenetic, apomictic, parthenogenetic |
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| agapanthus | (noun) any of various plants of the genus Agapanthus having umbels of showy blue to purple flowers | Synonyms: lily of the Nile |
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