| aperitif | (noun) alcoholic beverage taken before a meal as an appetizer | - |
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| aphorise | (verb) speak or write in aphorisms | Synonyms: aphorize |
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| aphorism | (noun) a short pithy instructive saying | Synonyms: apophthegm, apothegm |
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| aphorist | (noun) someone who formulates aphorisms or who repeats aphorisms | - |
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| aphoristic | (adjective) containing aphorisms or maxims | Synonyms: axiomatic |
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| (adjective) terse and witty and like a maxim | Synonyms: apothegmatic, epigrammatic |
| aphorize | (verb) speak or write in aphorisms | Synonyms: aphorise |
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| apiarian | (adjective) relating to bees or beekeeping | - |
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| apiarist | (noun) a farmer who keeps bees for their honey | Synonyms: apiculturist, beekeeper |
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| apiculturist | (noun) a farmer who keeps bees for their honey | Synonyms: apiarist, beekeeper |
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| apocrine | (adjective) (of exocrine glands) producing a secretion in which part of the secreting cell is released with the secretion | - |
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| apparition | (noun) an act of appearing or becoming visible unexpectedly | - |
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| (noun) something existing in perception only | Synonyms: fantasm, phantasm, phantasma, phantom, shadow |
| (noun) the appearance of a ghostlike figure | - |
| (noun) a ghostly appearing figure | Synonyms: fantasm, phantasm, phantasma, phantom, specter, spectre |
| apparitional | (adjective) resembling or characteristic of a phantom | Synonyms: ghostlike, ghostly, phantasmal, spectral, spiritual |
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| appearing | (noun) formal attendance (in court or at a hearing) of a party in an action | Synonyms: appearance, coming into court |
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| appendicularia | (noun) free-swimming tadpole-shaped pelagic tunicate resembling larvae of other tunicates | - |
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| apprisal | (noun) informing by words | Synonyms: notification, telling |
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| apprise | (verb) increase the value of | Synonyms: appreciate, apprize |
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| (verb) gain in value | Synonyms: appreciate, apprize, revalue |
| (verb) inform (somebody) of something | Synonyms: advise, apprize, give notice, notify, send word |
| (verb) make aware of | Synonyms: apprize, instruct |
| apprize | (verb) increase the value of | Synonyms: appreciate, apprise |
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| (verb) gain in value | Synonyms: appreciate, apprise, revalue |
| (verb) make aware of | Synonyms: apprise, instruct |
| (verb) inform (somebody) of something | Synonyms: advise, apprise, give notice, notify, send word |
| appropriable | (adjective) that can be appropriated | - |
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| appropriate | (adjective) suitable for a particular person or place or condition etc | - |
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| (adjective) meant or adapted for an occasion or use | Synonyms: suitable, suited |
| (verb) give or assign a resource to a particular person or cause | Synonyms: allow, earmark, reserve, set aside |
| (verb) take possession of by force, as after an invasion | Synonyms: capture, conquer, seize |
| appropriately | (adverb) in accordance with what is appropriate or suitable for the circumstances | Synonyms: befittingly, duly, fitly, fittingly, properly, suitably |
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| appropriateness | (noun) the quality of being specially suitable | - |
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| (noun) appropriate conduct; doing the right thing | Synonyms: rightness |
| appropriation | (noun) a deliberate act of acquisition of something, often without the permission of the owner | - |
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| (noun) incorporation by joining or uniting | Synonyms: annexation |
| (noun) money set aside (as by a legislature) for a specific purpose | - |
| appropriative | (adjective) of or relating to or given to the act of taking for yourself | - |
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| appropriator | (noun) someone who takes for his or her own use (especially without permission) | - |
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| apricot | (noun) a shade of pink tinged with yellow | Synonyms: peach, salmon pink, yellowish pink |
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| (noun) downy yellow to rosy-colored fruit resembling a small peach | - |
| (noun) Asian tree having clusters of usually white blossoms and edible fruit resembling the peach | Synonyms: apricot tree |
| apriorism | (noun) belief in a priori principles or reasoning; specifically : the doctrine that knowledge rests upon principles that are self-evident to reason or are presupposed by experience in general. | - |
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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 | - |
| aquarium | (noun) a tank or pool or bowl filled with water for keeping live fish and underwater animals | Synonyms: fish tank, marine museum |
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| arariba | (noun) Brazilian tree with handsomely marked wood | Synonyms: Centrolobium robustum |
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| araucaria | (noun) any of several tall South American or Australian trees with large cones and edible seeds | - |
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| arbitrarily | (adverb) in a random manner | Synonyms: at random, every which way, haphazardly, indiscriminately, randomly, willy-nilly |
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| arbitrariness | (noun) the trait of acting unpredictably and more from whim or caprice than from reason or judgment | Synonyms: capriciousness, flightiness, whimsey, whimsicality, whimsy |
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| arborical | (adjective) of or relating to or formed by trees | Synonyms: arborary, arboreal, arborous |
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| arboriculture | (noun) the tending of and caring for trees | Synonyms: tree farming |
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| arboriculturist | (noun) someone trained in forestry | Synonyms: forester, tree farmer |
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| arboriform | (adjective) resembling a tree in form and branching structure | Synonyms: arboreal, arboreous, arborescent, arboresque, dendriform, dendroid, dendroidal, tree-shaped, treelike |
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| arborise | (verb) branch out like trees | Synonyms: arborize |
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| arborist | (noun) a specialist in treating damaged trees | Synonyms: tree surgeon |
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| arborize | (verb) branch out like trees | Synonyms: arborise |
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| archaebacteria | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacterium, archaeobacteria, archeobacteria |
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| archaebacterium | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacteria, archaeobacteria, archeobacteria |
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| archaeobacteria | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacteria, archaebacterium, archeobacteria |
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| archbishopric | (noun) the territorial jurisdiction of an archbishop | - |
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| archeobacteria | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacteria, archaebacterium, archaeobacteria |
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| archesporial | (adjective) of or relating to the cells in a sporangium that give rise to spores | - |
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| archesporium | (noun) primitive cell or group of cells from which a mother cell develops | Synonyms: archespore |
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| archimandrite | (noun) the superior of an abbey of monks | Synonyms: abbot |
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| archosaurian | (adjective) of or relating to reptiles of the subclass Archosauria | - |
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| (noun) extinct reptiles including: dinosaurs, plesiosaurs, pterosaurs, ichthyosaurs, thecodonts | Synonyms: archosaur, archosaurian reptile |
| archpriest | (noun) a senior clergyman and dignitary | Synonyms: hierarch, high priest, prelate, primate |
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| aria | (noun) an elaborate song for solo voice | - |
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| arianist | (noun) an adherent of Arianism (the belief that Jesus Christ was not truly God) | - |
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| arid | (adjective) lacking sufficient water or rainfall | Synonyms: waterless |
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| (adjective) lacking vitality or spirit; lifeless | Synonyms: desiccate, desiccated |
| aridity | (noun) the quality of yielding nothing of value | Synonyms: barrenness, fruitlessness |
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| (noun) a deficiency of moisture (especially when resulting from a permanent absence of rainfall) | Synonyms: aridness, thirstiness |
| aridness | (noun) a deficiency of moisture (especially when resulting from a permanent absence of rainfall) | Synonyms: aridity, thirstiness |
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| arietta | (noun) a short aria | Synonyms: short aria |
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| aright | (adverb) in an accurate manner | Synonyms: correctly, right |
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| aril | (noun) fleshy and usually brightly colored cover of some seeds that develops from the ovule stalk and partially or entirely envelops the seed | - |
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| ariled | (adjective) (of some seeds) having a fleshy and usually brightly colored cover | Synonyms: arillate |
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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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| arioso | (noun) (music) a short recitative that is melodic but is not an aria | - |
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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 |
| arishth | (noun) large semi-evergreen tree of the East Indies; trunk exudes a tenacious gum; bitter bark used as a tonic; seeds yield an aromatic oil; sometimes placed in genus Melia | Synonyms: Azadirachta indica, margosa, Melia Azadirachta, neem, neem tree, nim tree |
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| arista | (noun) bristlelike process near the tip of the antenna of certain flies | - |
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| aristocracy | (noun) a privileged class holding hereditary titles | Synonyms: nobility |
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| (noun) the most powerful members of a society | Synonyms: gentry |
| aristocrat | (noun) a member of the aristocracy | Synonyms: blue blood, patrician |
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| aristocratic | (adjective) belonging to or characteristic of the nobility or aristocracy | Synonyms: aristocratical, blue-blooded, blue, gentle, patrician |
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| aristocratical | (adjective) belonging to or characteristic of the nobility or aristocracy | Synonyms: aristocratic, blue-blooded, blue, gentle, patrician |
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| aristocratically | (adverb) in an aristocratic manner | - |
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| aristocratism | (noun) the principles, practices or characteristics of aristocracy. | - |
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| arithmancy | (noun) divination by means of numbers | - |
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| arithmetic | (adjective) relating to or involving arithmetic | Synonyms: arithmetical |
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| (noun) the branch of pure mathematics dealing with the theory of numerical calculations | - |
| arithmetical | (adjective) relating to or involving arithmetic | Synonyms: arithmetic |
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| arithmetically | (adverb) with respect to arithmetic | - |
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| arithmetician | (noun) someone who specializes in arithmetic | - |
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| arity | (noun) the number of arguments that a function can take | - |
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| armamentarium | (noun) the collection of equipment and methods used in the practice of medicine | - |
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| armorial | (adjective) of or relating to heraldry or heraldic arms | - |
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| arrival | (noun) accomplishment of an objective | Synonyms: reaching |
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| (noun) the act of arriving at a certain place | - |
| (noun) someone who arrives (or has arrived) | Synonyms: arriver, comer |
| 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 |
| arrivederci | (noun) a farewell remark | Synonyms: adieu, adios, au revoir, auf wiedersehen, bye-bye, bye, cheerio, good-by, good-bye, good day, goodby, goodbye, sayonara, so long |
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| arriver | (noun) someone who arrives (or has arrived) | Synonyms: arrival, comer |
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| 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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| arsenopyrite | (noun) a silver-white or grey ore of arsenic | Synonyms: mispickel |
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| arteria | (noun) a blood vessel that carries blood from the heart to the body | Synonyms: arterial blood vessel, artery |
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| arterial | (adjective) of or involving or contained in the arteries | - |
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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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| arteriectasia | (noun) an abnormal distension of an artery | Synonyms: arteriectasis |
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| arteriectasis | (noun) an abnormal distension of an artery | Synonyms: arteriectasia |
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| arteriogram | (noun) an X ray of an artery filled with a contrast medium | - |
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| arteriography | (noun) roentgenographic examination of arteries | - |
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| arteriola | (noun) one of the small thin-walled arteries that end in capillaries | Synonyms: arteriole, capillary artery |
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| arteriolar | (adjective) of or relating to or involving arterioles | - |
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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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| arteriolosclerosis | (noun) sclerosis of the arterioles | - |
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| arteriosclerosis | (noun) sclerosis of the arterial walls | Synonyms: arterial sclerosis, coronary-artery disease, hardening of the arteries, induration of the arteries |
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| arteriosclerotic | (adjective) affected by arteriosclerosis | - |
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| arteriovenous | (adjective) connecting an artery to a vein | - |
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| arteritis | (noun) inflammation of an artery | - |
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