| agonised | (adjective) expressing pain or agony | Synonyms: agonized |
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| agonized | (adjective) expressing pain or agony | Synonyms: agonised |
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| agreed | (adjective) united by being of the same opinion | Synonyms: in agreement |
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| aground | (adjective) stuck in a place where a ship can no longer float | - |
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| (adverb) with the bottom lodged on the ground | - |
| agueweed | (noun) gentian of eastern North America having clusters of bristly blue flowers | Synonyms: ague weed, five-flowered gentian, Gentiana quinquefolia, Gentianella quinquefolia, stiff gentian |
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| (noun) perennial herb of southeastern United States having white-rayed flower heads; formerly used as in folk medicine | Synonyms: boneset, Eupatorium perfoliatum, thoroughwort |
| ahead | (adjective) having the leading position or higher score in a contest | Synonyms: in the lead, leading |
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| (adverb) at or in the front | Synonyms: before, in front |
| (adverb) ahead of time; in anticipation | Synonyms: beforehand, in advance |
| (adverb) in a forward direction | Synonyms: forrader, forward, forwards, onward, onwards |
| (adverb) leading or ahead in a competition | Synonyms: in the lead, out front |
| (adverb) to a different or a more advanced time (meaning advanced either toward the present or toward the future) | - |
| (adverb) to a more advanced or advantageous position | - |
| (adverb) toward the future; forward in time | Synonyms: forward |
| aid | (noun) the activity of contributing to the fulfillment of a need or furtherance of an effort or purpose | Synonyms: assist, assistance, help |
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| (noun) the work of providing treatment for or attending to someone or something | Synonyms: attention, care, tending |
| (noun) a person or thing that is a resource that helps make something easier or possible to do | Synonyms: assistance, help |
| (noun) gift of money or other material help to support a person or cause | Synonyms: assistance, economic aid, economic assistance, financial aid, financial assistance |
| (verb) improve the condition of | Synonyms: help |
| (verb) give help or assistance; be of service | Synonyms: assist, help |
| aided | (adjective) having help; often used as a combining form | Synonyms: assisted |
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| aired | (adjective) open to or abounding in fresh air | Synonyms: airy |
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| airfield | (noun) a place where planes take off and land | Synonyms: field, flying field, landing field |
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| airhead | (noun) a bridgehead seized by airborne troops | - |
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| (noun) a flighty scatterbrained simpleton | - |
| airheaded | (adjective) lacking seriousness; given to frivolity | Synonyms: dizzy, empty-headed, featherbrained, giddy, light-headed, lightheaded, silly |
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| airspeed | (noun) the speed of an aircraft relative to the air in which it is flying | - |
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| alarmed | (adjective) experiencing a sudden sense of danger | - |
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| alated | (adjective) (of seeds or insects) having winglike extensions | Synonyms: alate |
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| albuminoid | (noun) a simple protein found in horny and cartilaginous tissues and in the lens of the eye | Synonyms: scleroprotein |
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| algid | (adjective) chilly | - |
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| algoid | (adjective) of or resembling algae | - |
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| alidad | (noun) surveying instrument used with a plane table for drawing lines of sight on a distant object and for measuring angles | Synonyms: alidade |
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| (noun) surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachments | Synonyms: alidade |
| alienated | (adjective) caused to be unloved | Synonyms: estranged |
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| (adjective) socially disoriented | Synonyms: anomic, disoriented |
| aligned | (adjective) brought into agreement or cooperation on the side of a faction, party, or cause | - |
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| (adjective) in a straight line | - |
| alkaloid | (noun) natural bases containing nitrogen found in plants | - |
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| alkyd | (noun) a durable synthetic resin widely used in adhesives and paints | Synonyms: alkyd resin |
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| allantoid | (adjective) shaped like a sausage | Synonyms: sausage-shaped |
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| alleged | (adjective) declared but not proved | - |
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| (adjective) doubtful or suspect | Synonyms: so-called, supposed |
| alleviated | (adjective) (of pain or sorrow) made easier to bear | Synonyms: eased, relieved |
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| allgood | (noun) European plant naturalized in North America; often collected from the wild as a potherb | Synonyms: Chenopodium bonus-henricus, fat hen, good-king-henry, wild spinach |
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| allied | (adjective) joined by treaty or agreement | - |
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| (adjective) related by common characteristics or ancestry | - |
| (adjective) united in a confederacy or league | Synonyms: confederate, confederative |
| alligatored | (adjective) of paint or varnish; having the appearance of alligator hide | Synonyms: cracked |
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| allotted | (adjective) given as a task | - |
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| alloyed | (adjective) (used of metals) blended to obtain a desired property | - |
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| (adjective) (used of metals) debased by mixture with an inferior element | - |
| almond | (noun) oval-shaped edible seed of the almond tree | - |
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| (noun) small bushy deciduous tree native to Asia and North Africa having pretty pink blossoms and highly prized edible nuts enclosed in a hard green hull; cultivated in southern Australia and California | Synonyms: Amygdalus communis, Prunus amygdalus, Prunus dulcis, sweet almond |
| aloud | (adverb) using the voice; not silently | Synonyms: out loud |
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| (adverb) with relatively high volume | Synonyms: loud, loudly |
| alphabetised | (adjective) having been put in alphabetical order | Synonyms: alphabetized |
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| alphabetized | (adjective) having been put in alphabetical order | Synonyms: alphabetised |
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| altered | (adjective) changed in form or character without becoming something else | - |
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| (adjective) having testicles or ovaries removed | Synonyms: neutered |
| (adjective) changed in order to improve or made more fit for a particular purpose | Synonyms: adapted |
| amalgamated | (adjective) joined together into a whole | Synonyms: amalgamate, coalesced, consolidated, fused |
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| amazed | (adjective) filled with the emotional impact of overwhelming surprise or shock | Synonyms: astonied, astonished, astounded, stunned |
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| ambystomid | (noun) small to moderate-sized terrestrial or semiaquatic New World salamander | Synonyms: ambystomid salamander |
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| ameboid | (adjective) like an amoeba (especially in having a variable irregular shape) | Synonyms: amoeboid |
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| amend | (verb) to make better | Synonyms: ameliorate, better, improve, meliorate |
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| (verb) set straight or right | Synonyms: rectify, remediate, remedy, repair |
| (verb) make amendments to | - |
| amended | (adjective) of legislation | - |
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| (adjective) modified for the better | - |
| ammoniated | (adjective) combined or treated with ammonia | - |
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| ammonoid | (noun) one of the coiled chambered fossil shells of extinct mollusks | Synonyms: ammonite |
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| amoeboid | (adjective) like an amoeba (especially in having a variable irregular shape) | Synonyms: ameboid |
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| ampersand | (noun) a punctuation mark (&) used to represent conjunction (and) | - |
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| amphidiploid | (noun) (genetics) an organism or cell having a diploid set of chromosomes from each parent | - |
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| amphipod | (noun) a kind of malacostracan crustacean | - |
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| amused | (adjective) pleasantly occupied | Synonyms: diverted, entertained |
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| amygdaloid | (adjective) shaped like an almond | Synonyms: almond-shaped, amygdaliform, amygdaloidal |
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| (noun) volcanic rock in which rounded cavities formed by expanding gas have subsequently become filled with mineral deposits | - |
| amyloid | (adjective) resembling starch | Synonyms: amylaceous, amyloidal, farinaceous, starchlike |
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| (noun) (pathology) a waxy translucent complex protein resembling starch that results from degeneration of tissue | - |
| (noun) a non-nitrogenous food substance consisting chiefly of starch; any substance resembling starch | - |
| analysand | (noun) a person undergoing psychoanalysis | - |
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| analyzed | (adjective) examined carefully and methodically; broken down for consideration of constituent parts | - |
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| anapsid | (noun) primitive reptile having no opening in the temporal region of the skull; all extinct except turtles | Synonyms: anapsid reptile |
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| anaspid | (noun) extinct small freshwater jawless fish usually having a heterocercal tail and an armored head; of the Silurian and Devonian | - |
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| andrenid | (noun) a bee that is a member of the genus Andrena | Synonyms: andrena, mining bee |
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| android | (noun) an automaton that resembles a human being | Synonyms: humanoid, mechanical man |
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| (noun) An operating system from Google for mobile devices | - |
| aneroid | (adjective) containing no liquid or actuated without the use of liquid | - |
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| (noun) a barometer that measures pressure without using fluids | Synonyms: aneroid barometer |
| aneuploid | (adjective) having a chromosome number that is not an exact multiple of the haploid number | - |
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| angered | (adjective) marked by extreme anger | Synonyms: enraged, furious, infuriated, maddened |
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| angled | (adjective) forming or set at an angle | - |
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| anguished | (adjective) experiencing intense pain especially mental pain | Synonyms: tormented, tortured |
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| animated | (adjective) having life or vigor or spirit | Synonyms: alive |
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| (adjective) made to appear to move as living creatures do | - |
| aniseed | (noun) liquorice-flavored seeds, used medicinally and in cooking and liquors | Synonyms: anise, anise seed |
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| annelid | (adjective) relating to or belonging to or characteristic of any worms of the phylum Annelida | Synonyms: annelidan |
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| (noun) worms with cylindrical bodies segmented both internally and externally | Synonyms: annelid worm, segmented worm |
| annihilated | (adjective) destroyed completely | Synonyms: exterminated, wiped out |
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| announced | (adjective) declared publicly; made widely known | Synonyms: proclaimed |
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| annoyed | (adjective) aroused to impatience or anger | Synonyms: irritated, miffed, nettled, peeved, pissed, pissed off, riled, roiled, steamed, stung |
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| (adjective) troubled persistently especially with petty annoyances | Synonyms: harassed, harried, pestered, vexed |
| annulated | (adjective) shaped like a ring | Synonyms: annular, annulate, circinate, doughnut-shaped, ring-shaped, ringed |
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| antacid | (adjective) acting to neutralize acid (especially in the stomach) | - |
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| (noun) an agent that counteracts or neutralizes acidity (especially in the stomach) | Synonyms: alkaliser, alkalizer, antiacid, gastric antacid |
| 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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| antherozoid | (noun) a motile male gamete of a plant such as an alga or fern or gymnosperm | Synonyms: spermatozoid |
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| anthropoid | (adjective) resembling human beings | Synonyms: manlike |
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| (adjective) resembling apes | Synonyms: anthropoidal, apelike |
| (noun) any member of the suborder Anthropoidea including monkeys and apes and hominids | - |
| (noun) person who resembles a nonhuman primate | Synonyms: ape |
| antiacid | (noun) an agent that counteracts or neutralizes acidity (especially in the stomach) | Synonyms: alkaliser, alkalizer, antacid, gastric antacid |
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| antiapartheid | (adjective) opposing the policy of apartheid in South Africa | - |
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| anticipated | (adjective) expected hopefully | Synonyms: awaited, hoped-for |
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| antiquated | (adjective) so extremely old as seeming to belong to an earlier period | Synonyms: antediluvian, archaic |
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| antithyroid | (adjective) having the effect of counteracting excessive thyroid activity | - |
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| antlered | (adjective) having antlers | - |
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| aoudad | (noun) wild sheep of northern Africa | Synonyms: Ammotragus lervia, arui, audad, Barbary sheep, maned sheep |
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| apartheid | (noun) a social policy or racial segregation involving political and economic and legal discrimination against people who are not Whites; the former official policy in South Africa | - |
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| aphid | (noun) any of various small plant-sucking insects | - |
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| apoplectoid | (adjective) resembling apoplexy | Synonyms: apoplectiform |
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| appalled | (adjective) struck with fear, dread, or consternation | Synonyms: aghast, dismayed, shocked |
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| appareled | (adjective) dressed or clothed especially in fine attire; often used in combination | Synonyms: attired, dressed, garbed, garmented, habilimented, robed |
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| append | (verb) state or say further | Synonyms: add, supply |
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| (verb) fix to; attach | Synonyms: hang on, tack, tack on, tag on |
| (verb) add to the very end | Synonyms: add on, affix, supplement |
| appendaged | (adjective) having an appendage | - |
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| applaud | (verb) express that something is worthy of praise | - |
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| (verb) clap one's hands or shout after performances to indicate approval | Synonyms: acclaim, clap, spat |
| applewood | (noun) wood of any of various apple trees of the genus Malus | - |
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| applied | (adjective) concerned with concrete problems or data rather than with fundamental principles | - |
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| appointed | (adjective) subject to appointment | Synonyms: appointive |
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| (adjective) selected for a job | - |
| (adjective) provided with furnishing and accessories (especially of a tasteful kind) | - |
| (adjective) fixed or established especially by order or command | Synonyms: decreed, ordained, prescribed |
| apportioned | (adjective) given out in portions | Synonyms: dealt out, doled out, meted out, parceled out |
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| appreciated | (adjective) fully understood or grasped | Synonyms: apprehended, comprehended |
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| apprehend | (verb) get the meaning of something | Synonyms: compass, comprehend, dig, get the picture, grasp, grok, savvy |
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| (verb) take into custody | Synonyms: arrest, collar, cop, nab, nail, pick up |
| (verb) anticipate with dread or anxiety | Synonyms: quail at |
| apprehended | (adjective) fully understood or grasped | Synonyms: appreciated, comprehended |
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| apprenticed | (adjective) bound by contract | Synonyms: articled, bound, indentured |
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| appressed | (adjective) pressed close to or lying flat against something | Synonyms: adpressed |
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| approved | (adjective) established by authority; given authoritative approval | Synonyms: sanctioned |
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| arachnid | (noun) air-breathing arthropods characterized by simple eyes and four pairs of legs | Synonyms: arachnoid |
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| arachnoid | (adjective) relating to or resembling a member of the class Arachnida | Synonyms: arachnidian, spiderlike, spiderly, spidery |
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| (noun) air-breathing arthropods characterized by simple eyes and four pairs of legs | Synonyms: arachnid |
| (noun) the middle of the 3 meninges | Synonyms: arachnoid membrane |