| aggravate | (verb) make worse | Synonyms: exacerbate, exasperate, worsen |
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| (verb) exasperate or irritate | Synonyms: exacerbate, exasperate |
| aggregate | (adjective) composed of a dense cluster of separate units such as carpels or florets or drupelets | - |
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| (adjective) formed of separate units gathered into a mass or whole | Synonyms: aggregated, aggregative, mass |
| (noun) the whole amount | Synonyms: sum, total, totality |
| (noun) a sum total of many heterogenous things taken together | Synonyms: congeries, conglomeration |
| (noun) material such as sand or gravel used with cement and water to make concrete, mortar, or plaster | - |
| (verb) gather in a mass, sum, or whole | Synonyms: combine |
| (verb) amount in the aggregate to | - |
| aggregative | (adjective) formed of separate units gathered into a mass or whole | Synonyms: aggregate, aggregated, mass |
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| aggressive | (adjective) having or showing determination and energetic pursuit of your ends | - |
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| (adjective) characteristic of an enemy or one eager to fight | Synonyms: belligerent |
| (adjective) tending to spread quickly | Synonyms: fast-growing, strong-growing |
| aggrieve | (verb) cause to feel sorrow | Synonyms: grieve |
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| (verb) infringe on the rights of | - |
| agile | (adjective) moving quickly and lightly | Synonyms: nimble, quick, spry |
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| (adjective) mentally quick | Synonyms: nimble |
| agiotage | (noun) a fee charged for exchanging currencies | Synonyms: agio, exchange premium, premium |
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| (noun) speculative dealing in stock exchange securities or foreign exchange. | - |
| agitate | (verb) change the arrangement or position of | Synonyms: commove, disturb, raise up, shake up, stir up, vex |
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| (verb) cause to be agitated, excited, or roused | Synonyms: charge, charge up, commove, excite, rouse, turn on |
| (verb) move very slightly | Synonyms: budge, shift, stir |
| (verb) move or cause to move back and forth | Synonyms: shake |
| (verb) try to stir up public opinion | Synonyms: foment, stir up |
| (verb) exert oneself continuously, vigorously, or obtrusively to gain an end or engage in a crusade for a certain cause or person; be an advocate for | Synonyms: campaign, crusade, fight, press, push |
| agitative | (adjective) causing or tending to cause anger or resentment | Synonyms: agitating, provoking |
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| agnate | (adjective) related on the father's side | Synonyms: agnatic, paternal |
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| (noun) one related on the father's side | Synonyms: patrikin, patrilineal kin, patrilineal sib, patrisib |
| agnise | (verb) be fully aware or cognizant of | Synonyms: agnize, realise, realize, recognise, recognize |
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| agnize | (verb) be fully aware or cognizant of | Synonyms: agnise, realise, realize, recognise, recognize |
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| agone | (adjective) gone by; or in the past | Synonyms: ago |
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| agonise | (verb) suffer agony or anguish | Synonyms: agonize |
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| (verb) cause to agonize | Synonyms: agonize |
| agonize | (verb) suffer agony or anguish | Synonyms: agonise |
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| (verb) cause to agonize | Synonyms: agonise |
| agree | (verb) be in accord; be in agreement | Synonyms: concord, concur, hold |
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| (verb) consent or assent to a condition, or agree to do something | - |
| (verb) achieve harmony of opinion, feeling, or purpose | - |
| (verb) be agreeable or suitable | - |
| (verb) be compatible, similar or consistent; coincide in their characteristics | Synonyms: check, correspond, fit, gibe, jibe, match, tally |
| (verb) go together | Synonyms: accord, concord, consort, fit in, harmonise, harmonize |
| (verb) show grammatical agreement | - |
| agreeable | (adjective) conforming to your own liking or feelings or nature | - |
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| (adjective) prepared to agree or consent | - |
| (adjective) in keeping | Synonyms: accordant, concordant, conformable, consonant |
| 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 | - |
| aguacate | (noun) a pear-shaped tropical fruit with green or blackish skin and rich yellowish pulp enclosing a single large seed | Synonyms: alligator pear, avocado, avocado pear |
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| ague | (noun) a mark placed above a vowel to indicate pronunciation | Synonyms: acute, acute accent |
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| (noun) a fit of shivering or shaking | - |
| (noun) successive stages of chills and fever that is a symptom of malaria | Synonyms: chills and fever |
| ahorse | (adjective) traveling on horseback | Synonyms: ahorseback |
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| (adverb) on the back of a horse | Synonyms: ahorseback, horseback |
| aide | (noun) someone who acts as assistant | Synonyms: auxiliary |
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| (noun) an officer who acts as military assistant to a more senior officer | Synonyms: adjutant, aide-de-camp |
| aigrette | (noun) a long plume (especially one of egret feathers) worn on a hat or a piece of jewelry in the shape of a plume | Synonyms: aigret |
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| aiguillette | (noun) ornamental tagged cord or braid on the shoulder of a uniform | Synonyms: aglet, aiglet |
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| airborne | (adjective) moved or conveyed by or through air | - |
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| airbrake | (noun) a vehicular brake that operates by compressed air; especially for heavy vehicles | - |
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| (noun) a small parachute or articulated flap to reduce the speed of an aircraft | Synonyms: dive brake |
| airdrome | (noun) an airfield equipped with control tower and hangars as well as accommodations for passengers and cargo | Synonyms: aerodrome, airport, drome |
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| airfare | (noun) the fare charged for traveling by airplane | - |
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| airforce | (noun) the airborne branch of a country's armed forces | Synonyms: air force |
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| airframe | (noun) the framework and covering of an airplane or rocket (excluding the engines) | - |
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| airlike | (adjective) resembling air or having the form of air | Synonyms: aeriform |
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| airline | (noun) a commercial enterprise that provides scheduled flights for passengers | Synonyms: airline business, airway |
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| (noun) a hose that carries air under pressure | Synonyms: air hose |
| airplane | (noun) an aircraft that has a fixed wing and is powered by propellers or jets | Synonyms: aeroplane, plane |
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| airspace | (noun) the atmosphere above a nation that is deemed to be under its jurisdiction | - |
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| (noun) the space in the atmosphere immediately above the earth | Synonyms: air space |
| airwave | (noun) medium for radio and television broadcasting | Synonyms: air |
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| aisle | (noun) passageway between seating areas as in an auditorium or passenger vehicle or between areas of shelves of goods as in stores | Synonyms: gangway |
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| (noun) part of a church divided laterally from the nave proper by rows of pillars or columns | - |
| (noun) a long narrow passage (as in a cave or woods) | - |
| aitchbone | (noun) a cut of beef including the H-shaped rump bone | - |
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| akaryocyte | (noun) a cell without a nucleus (as an erythrocyte) | Synonyms: acaryote, akaryote |
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| akaryote | (noun) a cell without a nucleus (as an erythrocyte) | Synonyms: acaryote, akaryocyte |
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| akee | (noun) red pear-shaped tropical fruit with poisonous seeds; flesh is poisonous when unripe or overripe | Synonyms: ackee |
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| (noun) widely cultivated in tropical and subtropical regions for its fragrant flowers and colorful fruits; introduced in Jamaica by William Bligh | Synonyms: akee tree, Blighia sapida |
| alabastrine | (adjective) of or resembling alabaster | Synonyms: alabaster |
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| alanine | (noun) a crystalline amino acid that occurs in many proteins | - |
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| alate | (adjective) (of seeds or insects) having winglike extensions | Synonyms: alated |
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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 | - |
| albite | (noun) a widely distributed feldspar that forms rocks | Synonyms: white feldspar |
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| alcalde | (noun) a mayor or chief magistrate of a Spanish town | - |
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| alchemise | (verb) alter (elements) by alchemy | Synonyms: alchemize |
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| alchemize | (verb) alter (elements) by alchemy | Synonyms: alchemise |
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| alcoholise | (verb) make alcoholic, as by fermenting | Synonyms: alcoholize |
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| (verb) treat or infuse with alcohol | Synonyms: alcoholize |
| alcoholize | (verb) make alcoholic, as by fermenting | Synonyms: alcoholise |
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| (verb) treat or infuse with alcohol | Synonyms: alcoholise |
| (verb) subject to the influence of alcohol | - |
| alcove | (noun) a small recess opening off a larger room | Synonyms: bay |
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| aldehyde | (noun) any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids | - |
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| aldohexose | (noun) a monosaccharide sugar having six carbon atoms and an aldehyde group | - |
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| aldose | (noun) a monosaccharide sugar that contains the aldehyde group or is hemiacetal | - |
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| aldosterone | (noun) a corticosteroid hormone that is secreted by the cortex of the adrenal gland; regulates salt (sodium and potassium) and water balance | - |
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| aldotetrose | (noun) A four-carbon aldose; for example, threose, erythrose. | - |
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| aldotriose | (noun) Any aldose having three carbon atoms; in reality, just glyceraldehyde. | - |
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| ale | (noun) a general name for beer made with a top fermenting yeast; in some of the United States an ale is (by law) a brew of more than 4% alcohol by volume | - |
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| alee | (adverb) on or toward the lee | - |
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| alehouse | (noun) a tavern where ale is sold | - |
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| alendronate | (noun) a tablet (trade name Fosamax) prescribed to prevent or treat osteoporosis in women after menopause | Synonyms: Fosamax |
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| aleurone | (noun) granular protein in outermost layer of endosperm of many seeds or cereal grains | - |
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| alewife | (noun) shad-like food fish that runs rivers to spawn; often salted or smoked; sometimes placed in genus Pomolobus | Synonyms: Alosa pseudoharengus, Pomolobus pseudoharengus |
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| (noun) flesh of shad-like fish abundant along the Atlantic coast or in coastal streams | - |
| alexandrite | (noun) a green variety of chrysoberyl used as a gemstone | - |
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| algae | (noun) primitive chlorophyll-containing mainly aquatic eukaryotic organisms lacking true stems and roots and leaves | Synonyms: alga |
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| alidade | (noun) surveying instrument used with a plane table for drawing lines of sight on a distant object and for measuring angles | Synonyms: alidad |
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| (noun) surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachments | Synonyms: alidad |
| alienable | (adjective) transferable to another owner | - |
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| alienage | (noun) the quality of being alien | Synonyms: alienism |
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| alienate | (verb) arouse hostility or indifference in where there had formerly been love, affection, or friendliness | Synonyms: disaffect, estrange |
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| (verb) make withdrawn or isolated or emotionally dissociated | - |
| (verb) transfer property or ownership | Synonyms: alien |
| alienee | (noun) someone to whom the title of property is transferred | Synonyms: grantee |
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| alike | (adjective) having the same or similar characteristics | Synonyms: like, similar |
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| (adverb) equally | Synonyms: likewise |
| (adverb) in a like manner | - |
| alimentative | (adjective) related to the supply of aliment | - |
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| aline | (verb) place in a line or arrange so as to be parallel or straight | Synonyms: adjust, align, line up |
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| aliterate | (noun) a person who can read but is disinclined to derive information from literary sources | Synonyms: aliterate person |
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| alive | (adjective) possessing life | Synonyms: live |
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| (adjective) having life or vigor or spirit | Synonyms: animated |
| (adjective) capable of erupting | Synonyms: live |
| (adjective) mentally perceptive and responsive | Synonyms: alert, awake |
| (adjective) in operation | Synonyms: active |
| (adjective) (often followed by `with') full of life and spirit | - |
| (adjective) (followed by `to' or `of') aware of | - |
| alizarine | (noun) an orange-red crystalline compound used in making red pigments and in dyeing | Synonyms: alizarin |
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| alkaline | (adjective) relating to or containing an alkali; having a pH greater than 7 | Synonyms: alkalic |
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| alkalinise | (verb) make (a substance) alkaline | Synonyms: alkalinize |
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| (verb) become alkaline | Synonyms: alkalinize |
| alkalinize | (verb) make (a substance) alkaline | Synonyms: alkalinise |
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| (verb) become alkaline | Synonyms: alkalinise |
| alkalise | (verb) turn basic and less acidic | Synonyms: alkalify, alkalize, basify |
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| alkalize | (verb) turn basic and less acidic | Synonyms: alkalify, alkalise, basify |
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| alkane | (noun) a series of non-aromatic saturated hydrocarbons with the general formula CnH(2n+2) | Synonyms: alkane series, methane series, paraffin, paraffin series |
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| alkene | (noun) any unsaturated aliphatic hydrocarbon | Synonyms: olefin, olefine |
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| alkylbenzene | (noun) organic compound that has an alkyl group bound to a benzene ring | - |
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| alkylbenzenesulfonate | (noun) sulfonate of alkyl benzene | - |
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| alkyne | (noun) a colorless flammable gas used chiefly in welding and in organic synthesis | Synonyms: acetylene, ethyne |
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| allege | (verb) report or maintain | Synonyms: aver, say |
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| allegiance | (noun) the act of binding yourself (intellectually or emotionally) to a course of action | Synonyms: commitment, dedication, loyalty |
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| (noun) the loyalty that citizens owe to their country (or subjects to their sovereign) | Synonyms: fealty |
| allegorise | (verb) make into an allegory | Synonyms: allegorize |
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| (verb) interpret as an allegory | Synonyms: allegorize |
| allegorize | (verb) make into an allegory | Synonyms: allegorise |
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| (verb) interpret as an allegory | Synonyms: allegorise |
| allele | (noun) (genetics) either of a pair (or series) of alternative forms of a gene that can occupy the same locus on a particular chromosome and that control the same character | Synonyms: allelomorph |
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| allemande | (noun) egg-thickened veloute | Synonyms: allemande sauce |
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| alleviate | (verb) provide physical relief, as from pain | Synonyms: assuage, palliate, relieve |
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| (verb) make easier | Synonyms: ease, facilitate |
| alleviative | (adjective) moderating pain or sorrow by making it easier to bear | Synonyms: alleviatory, lenitive, mitigative, mitigatory, palliative |
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| alliance | (noun) the act of forming an alliance or confederation | Synonyms: confederation |
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| (noun) a formal agreement establishing an association or alliance between nations or other groups to achieve a particular aim | - |
| (noun) an organization of people (or countries) involved in a pact or treaty | Synonyms: alignment, alinement, coalition |
| (noun) a connection based on kinship or marriage or common interest | Synonyms: bond |
| (noun) the state of being allied or confederated | Synonyms: confederation |
| allice | (noun) European shad | Synonyms: allice shad, allis, allis shad, Alosa alosa |
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| alliterate | (verb) use alliteration as a form of poetry | - |
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| alliterative | (adjective) having the same consonant at the beginning of each stressed syllable | - |
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| allocable | (adjective) capable of being distributed | Synonyms: allocatable, apportionable |
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| allocatable | (adjective) capable of being distributed | Synonyms: allocable, apportionable |
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