| appropriative | (adjective) of or relating to or given to the act of taking for yourself | - |
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| approve | (verb) judge to be right or commendable; think well of | - |
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| (verb) give sanction to | Synonyms: O.K., okay, sanction |
| approximate | (adjective) located close together | Synonyms: close together |
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| (adjective) very close in resemblance | Synonyms: near |
| (adjective) not quite exact or correct | Synonyms: approximative, rough |
| (verb) judge tentatively or form an estimate of (quantities or time) | Synonyms: estimate, gauge, guess, judge |
| (verb) be close or similar | Synonyms: come close |
| approximative | (adjective) not quite exact or correct | Synonyms: approximate, rough |
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| appurtenance | (noun) a supplementary component that improves capability | Synonyms: accessory, add-on, supplement |
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| (noun) equipment consisting of miscellaneous articles needed for a particular operation or sport etc. | Synonyms: gear, paraphernalia |
| apse | (noun) a domed or vaulted recess or projection on a building especially the east end of a church; usually contains the altar | Synonyms: apsis |
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| aptitude | (noun) inherent ability | - |
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| aquaculture | (noun) rearing aquatic animals or cultivating aquatic plants for food | - |
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| aquamarine | (noun) a shade of blue tinged with green | Synonyms: aqua, cobalt blue, greenish blue, peacock blue, turquoise |
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| (noun) a transparent variety of beryl that is blue green in color | - |
| aquaplane | (noun) a board that is pulled by a speedboat as a person stands on it and skims over the top of the water | - |
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| (verb) ride on an aquaplane | - |
| (verb) rise up onto a thin film of water between the tires and road so that there is no more contact with the road | - |
| aquiculture | (noun) a technique of growing plants (without soil) in water containing dissolved nutrients | Synonyms: hydroponics, tank farming |
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| aquilege | (noun) a plant of the genus Aquilegia having irregular showy spurred flowers; north temperate regions especially mountains | Synonyms: aquilegia, columbine |
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| aquiline | (adjective) curved down like an eagle's beak | Synonyms: hooked |
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| arabesque | (noun) an ornament that interlaces simulated foliage in an intricate design | - |
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| (noun) position in which the dancer has one leg raised behind and arms outstretched in a conventional pose | - |
| arable | (adjective) (of farmland) capable of being farmed productively | Synonyms: cultivable, cultivatable, tillable |
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| aragonite | (noun) a mineral form of crystalline calcium carbonate; dimorphic with calcite | - |
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| arame | (noun) an edible seaweed with a mild flavor | - |
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| arbitrable | (adjective) appropriate for or subject to settlement by arbitration | - |
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| arbitrage | (noun) a kind of hedged investment meant to capture slight differences in price; when there is a difference in the price of something on two different markets the arbitrageur simultaneously buys at the lower price and sells at the higher price | - |
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| (verb) practice arbitrage, as in the stock market | - |
| arbitrate | (verb) act between parties with a view to reconciling differences | Synonyms: intercede, intermediate, liaise, mediate |
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| arbitrative | (adjective) relating to or having the authority to arbitrate | - |
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| arboresque | (adjective) resembling a tree in form and branching structure | Synonyms: arboreal, arboreous, arborescent, arboriform, dendriform, dendroid, dendroidal, tree-shaped, treelike |
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| arboriculture | (noun) the tending of and caring for trees | Synonyms: tree farming |
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| arborise | (verb) branch out like trees | Synonyms: arborize |
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| arborize | (verb) branch out like trees | Synonyms: arborise |
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| arborvitae | (noun) any of several Asian and North American conifers of the genera Thuja and Thujopsis | - |
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| arcade | (noun) a structure composed of a series of arches supported by columns | Synonyms: colonnade |
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| (noun) a covered passageway with shops and stalls on either side | - |
| arcane | (adjective) requiring secret or mysterious knowledge | - |
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| arccosine | (noun) the inverse function of the cosine; the angle that has a cosine equal to a given number | Synonyms: arc cosine, arccos, inverse cosine |
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| arcdegree | (noun) a measure for arcs and angles | Synonyms: degree |
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| archaise | (verb) give an archaic appearance of character to | Synonyms: archaize |
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| archaize | (verb) give an archaic appearance of character to | Synonyms: archaise |
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| archdiocese | (noun) the diocese of an archbishop | - |
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| archduke | (noun) a sovereign prince of the former ruling house of Austria | - |
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| archegoniate | (adjective) of or relating to an archegonium | Synonyms: archegonial |
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| archespore | (noun) primitive cell or group of cells from which a mother cell develops | Synonyms: archesporium |
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| archetype | (noun) something that serves as a model or a basis for making copies | Synonyms: original, pilot |
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| archidiaconate | (noun) office or position of an archdeacon | - |
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| archimandrite | (noun) the superior of an abbey of monks | Synonyms: abbot |
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| archine | (noun) a Russian unit of length (71 cm) | - |
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| architecture | (noun) the profession of designing buildings and environments with consideration for their esthetic effect | - |
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| (noun) an architectural product or work | - |
| (noun) (computer science) the structure and organization of a computer's hardware or system software | Synonyms: computer architecture |
| (noun) the discipline dealing with the principles of design and construction and ornamentation of fine buildings | - |
| architrave | (noun) the lowest part of an entablature; rests immediately on the capitals of the columns | - |
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| (noun) the molding around a door or window | - |
| archive | (noun) a depository containing historical records and documents | - |
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| (verb) put into an archive | Synonyms: file away |
| arcminute | (noun) a unit of angular distance equal to a 60th of a degree | Synonyms: minute, minute of arc |
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| arcsine | (noun) the inverse function of the sine; the angle that has a sine equal to a given number | Synonyms: arc sine, arcsin, inverse sine |
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| arcuate | (adjective) forming or resembling an arch | Synonyms: arced, arched, arching, arciform, bowed |
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| are | (noun) a unit of surface area equal to 100 square meters | Synonyms: ar |
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| areolate | (adjective) relating to or like or divided into areolae | Synonyms: areolar |
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| arere | (noun) large west African tree having large palmately lobed leaves and axillary cymose panicles of small white flowers and one-winged seeds; yields soft white to pale yellow wood | Synonyms: obeche, obechi, samba, Triplochiton scleroxcylon |
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| arete | (noun) a sharp narrow ridge found in rugged mountains | - |
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| argemone | (noun) any plant of the genus Argemone having large white or yellow flowers and prickly leaves and stems and pods; chiefly of tropical America | Synonyms: devil's fig, prickly poppy, white thistle |
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| argentine | (noun) any of various small silver-scaled salmon-like marine fishes | - |
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| argentite | (noun) a valuable silver ore consisting of silver sulfide (Ag2S) | - |
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| argillite | (noun) a sedimentary rock differing from shale in being bound by silica and from slate in having no slate cleavages | - |
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| arginine | (noun) a bitter tasting amino acid found in proteins and necessary for nutrition; its absence from the diet leads to a reduced production of spermatozoa | - |
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| arguable | (adjective) open to argument or debate | Synonyms: debatable, disputable, moot |
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| (adjective) capable of being supported by argument | - |
| argue | (verb) have an argument about something | Synonyms: contend, debate, fence |
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| (verb) give evidence of | Synonyms: indicate |
| (verb) present reasons and arguments | Synonyms: reason |
| argumentative | (adjective) given to or characterized by argument | - |
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| argyle | (noun) a sock knitted or woven with an argyle design | Synonyms: argyll |
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| (noun) a design consisting of a pattern of varicolored diamonds on a solid background (originally for knitted articles); patterned after the tartan of a clan in western Scotland | Synonyms: argyll |
| (noun) a covered gravy holder of silver or other metal containing a detachable central vessel for hot water to keep the gravy warm | Synonyms: argyll |
| argyrodite | (noun) a rare steel-grey mineral consisting of silver and germanium and sulfur | - |
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| arillate | (adjective) (of some seeds) having a fleshy and usually brightly colored cover | Synonyms: ariled |
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| ariose | (adjective) having a melody (as distinguished from recitative) | Synonyms: songlike |
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| arise | (verb) get up and out of bed | Synonyms: get up, rise, turn out, uprise |
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| (verb) result or issue | Synonyms: come up |
| (verb) rise to one's feet | Synonyms: get up, rise, stand up, uprise |
| (verb) move upward | Synonyms: come up, go up, lift, move up, rise, uprise |
| (verb) take part in a rebellion; renounce a former allegiance | Synonyms: rebel, rise, rise up |
| (verb) come into existence; take on form or shape | Synonyms: develop, grow, originate, rise, spring up, uprise |
| (verb) originate or come into being | Synonyms: bob up, come up |
| armature | (noun) coil in which voltage is induced by motion through a magnetic field | - |
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| armhole | (noun) a hole through which you put your arm and where a sleeve can be attached | - |
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| armistice | (noun) a state of peace agreed to between opponents so they can discuss peace terms | Synonyms: cease-fire, truce |
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| armlike | (adjective) resembling an arm | - |
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| armoire | (noun) a large wardrobe or cabinet; originally used for storing weapons | - |
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| aromatise | (verb) fill or impregnate with an odor | Synonyms: aromatize, perfume |
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| aromatize | (verb) fill or impregnate with an odor | Synonyms: aromatise, perfume |
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| arouse | (verb) cause to be alert and energetic | Synonyms: brace, energise, energize, perk up, stimulate |
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| (verb) cause to become awake or conscious | Synonyms: awaken, rouse, wake, wake up, waken |
| (verb) stop sleeping | Synonyms: awake, awaken, come alive, wake, wake up, waken |
| (verb) summon into action or bring into existence, often as if by magic | Synonyms: bring up, call down, call forth, conjure, conjure up, evoke, invoke, put forward, raise, stir |
| (verb) call forth (emotions, feelings, and responses) | Synonyms: elicit, enkindle, evoke, fire, kindle, provoke, raise |
| (verb) to evoke sexual feelings | Synonyms: excite, sex, turn on, wind up |
| (verb) to begin moving | Synonyms: stir |
| arrange | (verb) arrange attractively | Synonyms: coif, coiffe, coiffure, do, dress, set |
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| (verb) arrange thoughts, ideas, temporal events | Synonyms: order, put, set up |
| (verb) make arrangements for | Synonyms: fix up |
| (verb) put into a proper or systematic order | Synonyms: set up |
| (verb) adapt for performance in a different way | Synonyms: set |
| (verb) set (printed matter) into a specific format | Synonyms: format |
| (verb) plan, organize, and carry out (an event) | Synonyms: stage |
| arrive | (verb) reach a destination; arrive by movement or progress | Synonyms: come, get |
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| (verb) succeed in a big way; get to the top | Synonyms: get in, go far, make it |
| arriviste | (noun) a person who has suddenly risen to a higher economic status but has not gained social acceptance of others in that class | Synonyms: nouveau-riche, parvenu, upstart |
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| arrogance | (noun) overbearing pride evidenced by a superior manner toward inferiors | Synonyms: haughtiness, hauteur, high-handedness, lordliness |
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| arrogate | (verb) seize and take control without authority and possibly with force; take as one's right or possession | Synonyms: assume, seize, take over, usurp |
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| (verb) make undue claims to having | Synonyms: assign |
| (verb) demand as being one's due or property; assert one's right or title to | Synonyms: claim, lay claim |
| arse | (noun) vulgar slang for anus | Synonyms: arsehole, asshole, bunghole |
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| (noun) the fleshy part of the human body that you sit on | Synonyms: ass, backside, behind, bottom, bum, buns, butt, buttocks, can, derriere, fanny, fundament, hind end, hindquarters, keister, nates, posterior, prat, rear, rear end, rump, seat, stern, tail, tail end, tooshie, tush |
| arsehole | (noun) vulgar slang for anus | Synonyms: arse, asshole, bunghole |
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| arsenate | (noun) a salt or ester of arsenic acid | - |
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| arsenide | (noun) a compound of arsenic with a more positive element | - |
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| arsenopyrite | (noun) a silver-white or grey ore of arsenic | Synonyms: mispickel |
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| arsine | (noun) a poisonous colorless flammable gas used in organic synthesis and to dope transistors and as a poison gas in warfare | - |
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| arterialise | (verb) change venous blood into arterial blood | Synonyms: arterialize |
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| arterialize | (verb) change venous blood into arterial blood | Synonyms: arterialise |
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| arteriole | (noun) one of the small thin-walled arteries that end in capillaries | Synonyms: arteriola, capillary artery |
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| arthromere | (noun) any of the segments in the body of a jointed animal like an arthropod | - |
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| arthroscope | (noun) a type of endoscope that is inserted into a joint for visual examination | - |
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| arthrospore | (noun) one of a string of thick walled vegetative resting cells formed by some algae and fungi | - |
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| (noun) a body that resembles a spore but is not an endospore; produced by some bacteria | - |
| artichoke | (noun) a thistlelike flower head with edible fleshy leaves and heart | Synonyms: globe artichoke |
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| (noun) Mediterranean thistlelike plant widely cultivated for its large edible flower head | Synonyms: artichoke plant, Cynara scolymus, globe artichoke |
| article | (noun) one of a class of artifacts | - |
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| (noun) nonfictional prose forming an independent part of a publication | - |
| (noun) (grammar) a determiner that may indicate the specificity of reference of a noun phrase | - |
| (noun) a separate section of a legal document (as a statute or contract or will) | Synonyms: clause |
| (verb) bind by a contract; especially for a training period | - |
| articulate | (adjective) expressing yourself easily or characterized by clear expressive language | - |
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| (adjective) consisting of segments held together by joints | Synonyms: articulated |
| (verb) speak, pronounce, or utter in a certain way | Synonyms: enounce, enunciate, pronounce, say, sound out |
| (verb) express or state clearly | Synonyms: enunciate, vocalise, vocalize |
| (verb) put into words or an expression | Synonyms: formulate, give voice, phrase, word |
| (verb) provide with a joint | Synonyms: joint |
| (verb) unite by forming a joint or joints | - |
| articulative | (adjective) of or relating to articulation | Synonyms: articulatory |
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| artifice | (noun) a deceptive maneuver (especially to avoid capture) | Synonyms: ruse |
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| artiste | (noun) a public performer (a dancer or singer) | - |
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| ascendable | (adjective) capable of being ascended | Synonyms: ascendible, climbable |
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| ascendance | (noun) the state that exists when one person or group has power over another | Synonyms: ascendancy, ascendence, ascendency, control, dominance |
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| ascendence | (noun) the state that exists when one person or group has power over another | Synonyms: ascendance, ascendancy, ascendency, control, dominance |
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| ascendible | (adjective) capable of being ascended | Synonyms: ascendable, climbable |
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| ascensive | (adjective) tending or directed upward | Synonyms: ascendant, ascendent |
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| ascertainable | (adjective) capable of being ascertained or found out | Synonyms: discoverable |
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