| abacinate | (verb) blind by holding a red-hot metal plate before someone's eyes | - |
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| abate | (verb) become less in amount or intensity | Synonyms: die away, let up, slack, slack off |
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| (verb) make less active or intense | Synonyms: slack, slake |
| abatement | (noun) the act of abating | - |
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| (noun) an interruption in the intensity or amount of something | Synonyms: hiatus, reprieve, respite, suspension |
| abbreviate | (verb) shorten | - |
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| (verb) reduce in scope while retaining essential elements | Synonyms: abridge, contract, cut, foreshorten, reduce, shorten |
| abbreviated | (adjective) (of clothing) very short | Synonyms: brief |
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| (adjective) cut short in duration | Synonyms: shortened, truncated |
| abdicate | (verb) give up, such as power, as of monarchs and emperors, or duties and obligations | Synonyms: renounce |
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| abdominocentesis | (noun) centesis of the belly to remove fluid for diagnosis | Synonyms: paracentesis |
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| aberrate | (verb) diverge or deviate from the straight path; produce aberration | - |
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| (verb) diverge from the expected | - |
| abetalipoproteinemia | (noun) a rare inherited disorder of fat metabolism; characterized by severe deficiency of beta-lipoproteins and abnormal red blood cells (acanthocytes) and abnormally low cholesterol levels | - |
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| abetter | (noun) one who helps or encourages or incites another | Synonyms: abettor |
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| ablactate | (verb) gradually deprive (infants and young mammals) of mother's milk | Synonyms: wean |
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| ablate | (verb) wear away through erosion or vaporization | - |
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| (verb) remove an organ or bodily structure | - |
| ablated | (adjective) made smaller or less by melting or erosion or vaporization | - |
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| abnegate | (verb) deny or renounce | - |
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| (verb) surrender (power or a position) | - |
| (verb) deny oneself (something); restrain, especially from indulging in some pleasure | Synonyms: deny |
| abominate | (verb) find repugnant | Synonyms: abhor, execrate, loathe |
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| abranchiate | (adjective) having no gills | Synonyms: abranchial, abranchious, gill-less |
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| abrogate | (verb) revoke formally | - |
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| absentee | (noun) one that is absent or not in residence | - |
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| absenteeism | (noun) habitual absence from work | - |
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| absolute | (adjective) perfect or complete or pure | - |
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| (adjective) not limited by law | - |
| (adjective) not capable of being violated or infringed | Synonyms: infrangible, inviolable |
| (adjective) expressing finality with no implication of possible change | - |
| (adjective) complete and without restriction or qualification; sometimes used informally as intensifiers | Synonyms: downright, out-and-out, rank, right-down, sheer |
| (noun) something that is conceived or that exists independently and not in relation to other things; something that does not depend on anything else and is beyond human control; something that is not relative | - |
| absolutely | (adverb) completely and without qualification; used informally as intensifiers | Synonyms: dead, perfectly, utterly |
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| (adverb) totally and definitely; without question | - |
| absoluteness | (noun) the quality of being absolute | - |
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| (noun) the quality of being complete or utter or extreme | Synonyms: starkness, utterness |
| absorbate | (noun) a material that has been or is capable of being absorbed | - |
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| absquatulate | (verb) run away; usually includes taking something or somebody along | Synonyms: abscond, bolt, decamp, go off, make off, run off |
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| abstemious | (adjective) sparing in consumption of especially food and drink | - |
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| (adjective) marked by temperance in indulgence | Synonyms: light |
| abstemiously | (adverb) in a sparing manner; without overindulgence | Synonyms: temperately |
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| abstemiousness | (noun) moderation in eating and drinking | - |
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| (noun) restricted to bare necessities | - |
| abstention | (noun) the trait of abstaining (especially from alcohol) | Synonyms: abstinence |
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| abstentious | (adjective) self-restraining; not indulging an appetite especially for food or drink | Synonyms: abstinent |
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| abstracted | (adjective) lost in thought; showing preoccupation | Synonyms: absent, absentminded, scatty |
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| abstractedly | (adverb) in an absentminded or preoccupied manner | Synonyms: absently, absentmindedly, inattentively |
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| abstractedness | (noun) preoccupation with something to the exclusion of all else | Synonyms: abstraction |
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| abstracter | (noun) one who makes abstracts or summarizes information | Synonyms: abstractor |
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| abutter | (noun) the owner of contiguous property | - |
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| acanthocyte | (noun) an abnormal red blood cell that has thorny projections of protoplasm | - |
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| acanthopterygian | (noun) a teleost fish with fins that are supported by sharp inflexible rays | Synonyms: spiny-finned fish |
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| acaryote | (noun) a cell without a nucleus (as an erythrocyte) | Synonyms: akaryocyte, akaryote |
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| acaudate | (adjective) lacking a tail or taillike appendage | Synonyms: acaudal |
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| accelerate | (verb) move faster | Synonyms: quicken, speed, speed up |
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| (verb) cause to move faster | Synonyms: speed, speed up |
| accelerated | (adjective) speeded up, as of an academic course | - |
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| accelerometer | (noun) an instrument for measuring the acceleration of aircraft or rockets | - |
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| accented | (adjective) bearing a stress or accent | Synonyms: stressed |
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| (adjective) (used of syllables) bearing the principle stress, usually accompanied by a change in pitch | Synonyms: tonic |
| accentuate | (verb) to stress, single out as important | Synonyms: accent, emphasise, emphasize, punctuate, stress |
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| (verb) put stress on; utter with an accent | Synonyms: accent, stress |
| accepted | (adjective) generally approved or compelling recognition | Synonyms: recognised, recognized |
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| acclimate | (verb) get used to a certain climate | Synonyms: acclimatise, acclimatize |
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| accommodate | (verb) make fit for, or change to suit a new purpose | Synonyms: adapt |
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| (verb) make (one thing) compatible with (another) | Synonyms: conciliate, reconcile |
| (verb) provide a service or favor for someone | Synonyms: oblige |
| (verb) provide with something desired or needed | - |
| (verb) be agreeable or acceptable to | Synonyms: fit, suit |
| (verb) provide housing for | Synonyms: lodge |
| (verb) have room for; hold without crowding | Synonyms: admit, hold |
| accouter | (verb) provide with military equipment | Synonyms: accoutre |
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| accoutered | (adjective) provided with necessary articles of equipment for a specialized purpose (especially military) | Synonyms: accoutred |
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| accouterment | (noun) clothing that is worn or carried, but not part of your main clothing | Synonyms: accessory, accoutrement |
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| accredited | (adjective) given official approval to act | Synonyms: commissioned, licenced, licensed |
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| accrete | (verb) grow together (of plants and organs) | Synonyms: grow together |
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| (verb) grow or become attached by accretion | - |
| acculturate | (verb) assimilate culturally | - |
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| accumulate | (verb) increase in amount by collecting or gathering | Synonyms: amass, conglomerate, cumulate, gather, pile up |
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| (verb) get or gather together | Synonyms: amass, collect, compile, hoard, pile up, roll up |
| accumulated | (adjective) periodically accumulated over time | Synonyms: accrued |
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| accurate | (adjective) conforming exactly or almost exactly to fact or to a standard or performing with total accuracy | - |
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| (adjective) (of ideas, images, representations, expressions) characterized by perfect conformity to fact or truth; strictly correct | Synonyms: exact, precise |
| accurately | (adverb) with few mistakes | - |
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| (adverb) strictly correctly | - |
| acerate | (adjective) narrow and long and pointed; as pine leaves | Synonyms: acerose, acicular, needle-shaped |
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| acerbate | (verb) make sour or bitter | - |
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| (verb) cause to be bitter or resentful | Synonyms: embitter, envenom |
| acervate | (adjective) pertaining to a growth of fungi that forms a heaped-up mass | - |
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| acetate | (noun) a fabric made from fibers of cellulose acetate | Synonyms: acetate rayon |
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| (noun) a salt or ester of acetic acid | Synonyms: ethanoate |
| acetylate | (verb) receive substitution of an acetyl group | Synonyms: acetylise, acetylize |
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| (verb) introduce an acetyl group into (a chemical compound) | Synonyms: acetylise, acetylize |
| achondrite | (noun) a stony meteor lacking chondrules | - |
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| aciculate | (adjective) related to plants or animals or crystals having aciculae or needlelike parts | - |
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| acidulate | (verb) make sour or more sour | Synonyms: acetify, acidify, sour |
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| acolyte | (noun) someone who assists a priest or minister in a liturgical service; a cleric ordained in the highest of the minor orders in the Roman Catholic Church but not in the Anglican Church or the Eastern Orthodox Churches | - |
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| aconite | (noun) any of various usually poisonous plants of the genus Aconitum having tuberous roots and palmately lobed leaves and blue or white flowers | - |
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| acquainted | (adjective) having fair knowledge of | - |
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| acquitted | (adjective) declared not guilty of a specific offense or crime; legally blameless | Synonyms: not guilty |
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| acrylate | (noun) a salt or ester of propenoic acid | Synonyms: propenoate |
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| actinolite | (noun) a green mineral of the amphibole group; calcium magnesium iron silicate | - |
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| actinometer | (noun) an instrument for measuring the intensity of electromagnetic radiation (usually by the photochemical effect) | - |
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| actinomycete | (noun) any bacteria (some of which are pathogenic for humans and animals) belonging to the order Actinomycetales | - |
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| activate | (verb) make active or more active | - |
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| (verb) make (substances) radioactive | - |
| (verb) aerate (sewage) so as to favor the growth of organisms that decompose organic matter | Synonyms: aerate |
| (verb) make more adsorptive | - |
| (verb) put in motion or move to act | Synonyms: actuate, set off, spark, spark off, touch off, trigger, trigger off, trip |
| activated | (adjective) rendered active; e.g. rendered radioactive or luminescent or photosensitive or conductive | - |
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| (adjective) (military) set up and placed on active assignment | - |
| (adjective) (of e.g. a molecule) made reactive or more reactive | Synonyms: excited |
| (adjective) (of sewage) treated with aeration and bacteria to aid decomposition | - |
| actuate | (verb) put in motion or move to act | Synonyms: activate, set off, spark, spark off, touch off, trigger, trigger off, trip |
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| (verb) give an incentive for action | Synonyms: incite, motivate, move, prompt, propel |
| actuated | (adjective) moved to action | - |
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| acuate | (adjective) ending in a sharp point | Synonyms: acute, needlelike, sharp |
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| aculeate | (adjective) having or resembling a stinger or barb | Synonyms: aculeated |
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| aculeated | (adjective) having or resembling a stinger or barb | Synonyms: aculeate |
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| acuminate | (adjective) (of a leaf shape) narrowing to a slender point | - |
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| (verb) make sharp or acute; taper; make (something) come to a point | - |
| acute | (adjective) having or experiencing a rapid onset and short but severe course | - |
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| (adjective) of an angle; less than 90 degrees | - |
| (adjective) of critical importance and consequence | - |
| (adjective) having or demonstrating ability to recognize or draw fine distinctions | Synonyms: discriminating, incisive, keen, knifelike, penetrating, penetrative, piercing, sharp |
| (adjective) ending in a sharp point | Synonyms: acuate, needlelike, sharp |
| (adjective) extremely sharp or severe | Synonyms: intense |
| (noun) a mark placed above a vowel to indicate pronunciation | Synonyms: acute accent, ague |
| acutely | (adverb) having a rapid onset | - |
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| (adverb) in a keen or penetrating way | Synonyms: keenly |
| (adverb) changing suddenly in direction and degree | Synonyms: sharp, sharply |
| (adverb) in a shrewd manner | Synonyms: astutely, sagaciously, sapiently, shrewdly |
| acuteness | (noun) the quality of having a sharp edge or point | - |
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| (noun) a quick and penetrating intelligence | Synonyms: acuity, keenness, sharpness |
| (noun) a sensitivity that is keen and highly developed | - |
| adapted | (adjective) changed in order to improve or made more fit for a particular purpose | Synonyms: altered |
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| adapter | (noun) device that enables something to be used in a way different from that for which it was intended or makes different pieces of apparatus compatible | Synonyms: adaptor |
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| (noun) a musician who adapts a composition for particular voices or instruments or for another style of performance | Synonyms: arranger, transcriber |
| addicted | (adjective) compulsively or physiologically dependent on something habit-forming | - |
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| addlepated | (adjective) stupid and confused | Synonyms: addlebrained, muddleheaded, puddingheaded |
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| adequate | (adjective) having the requisite qualities or resources to meet a task | Synonyms: equal |
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| (adjective) about average; acceptable | Synonyms: fair to middling, passable, tolerable |
| (adjective) sufficient for the purpose | Synonyms: enough |
| adequately | (adverb) in an adequate manner or to an adequate degree | - |
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| adequateness | (noun) the quality of being able to meet a need satisfactorily: | Synonyms: adequacy |
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| adesite | (noun) dark greyish extrusive rock | - |
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| adjudicate | (verb) bring to an end; settle conclusively | Synonyms: decide, resolve, settle |
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| (verb) put on trial or hear a case and sit as the judge at the trial of | Synonyms: judge, try |
| adjusted | (adjective) altered to accommodate to certain requirements or bring into a proper relation | - |
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| (adjective) adjusted to demands of daily living; showing emotional stability | - |
| (adjective) (especially of garments) having the fit or style adjusted | - |
| (adjective) having achieved a comfortable relation with your environment | Synonyms: familiarised, familiarized |
| adjuster | (noun) one who investigates insurance claims or claims for damages and recommends an effective settlement | Synonyms: adjustor, claim agent, claims adjuster, claims adjustor |
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| administer | (verb) give or apply (medications) | Synonyms: dispense |
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| (verb) administer or bestow, as in small portions | Synonyms: allot, deal, deal out, dish out, dispense, distribute, dole out, lot, mete out, parcel out, shell out |
| (verb) perform (a church sacrament) ritually | - |
| (verb) work in an administrative capacity; supervise or be in charge of | Synonyms: administrate |
| (verb) direct the taking of | - |
| administrate | (verb) work in an administrative capacity; supervise or be in charge of | Synonyms: administer |
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| admittedly | (adverb) as acknowledged | Synonyms: avowedly, confessedly, true |
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| adnate | (adjective) of unlike parts or organs; growing closely attached | - |
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| adopted | (adjective) acquired as your own by free choice | Synonyms: adoptive |
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| adoptee | (noun) someone (such as a child) who has been adopted | - |
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