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ar·gen·tite noun : a dark gray mineral that is an important ore of silver

ar·gon noun [ORIGIN: Gk, neut. of argos idle, lazy, fr. a- not + ergon work; fr. its relative inertness]

: a colorless odorless gaseous chemical element found in the air and used for filling electric lamps

ar·go·sy noun, plural -sies 1 : a large merchant ship

2 : FLEET

ar·got noun : the language of a particular group or class

Synonyms

cant, jargon, language, lingo, slang, terminology, vocabulary—more at TERMINOLOGY

argu·able adjective : open to argument, dispute, or question

Synonyms

debatable, disputable, doubtful, moot, questionable—more at DEBATABLE

ar·gu·ably adverb : it can be argued

ar·gue verb ar·gued; ar·gu·ing 1 : to give reasons for or against something

2 : to contend in words : DISPUTE

3 : to consider the pros and cons of

4 : to persuade by giving reasons

Synonyms

[1] assert, contend, maintain, plead, reason; also claim, insist

[2] bicker, brawl, dispute, fall out, fight, hassle, quarrel, row, scrap, spat, squabble, wrangle; also challenge, dare, defy

[3] chew over, debate, discuss, dispute, hash, moot, talk over—more at DISCUSS

[4] convince, get, induce, move, persuade, prevail, satisfy, talk, win—more at PERSUADE

ar·gu·ment noun 1 : a reason offered in proof

2 : discourse intended to persuade

3 : a usu. verbal conflict : QUARREL

Synonyms

[1] assertion, contention, thesis—more at CONTENTION

[1] case, explanation, rationale, reason—more at REASON

[2] colloquy, conference, deliberation, discourse, discussion, give-and-take, parley, talk—more at DISCUSSION

[3] altercation, bicker, brawl, disagreement, dispute, fight, hassle, misunderstanding, quarrel, row, scrap, spat, squabble, wrangle; also clash, run-in, skirmish, tussle

ar·gu·men·ta·tion noun : the art of formal discussion

ar·gu·men·ta·tive adjective : inclined to argue

Synonyms

contentious, disputatious, quarrelsome, scrappy; also bellicose, belligerent, combative, pugnacious, truculent

ar·gyle also ar·gyll noun, often cap : a geometric knitting pattern of varicolored diamonds on a single background color; also : a sock knit in this pattern

aria noun : an accompanied elaborate vocal solo forming part of a larger work

ar·id adjective : very dry; especially : having insufficient rainfall to support agriculture

— arid·i·ty noun

Synonyms

dry, sere, thirsty—more at DRY

Ar·i·es noun [ORIGIN: L, lit., ram]

1 : a zodiacal constellation between Pisces and Taurus pictured as a ram

2 : the 1st sign of the zodiac in astrology; also : one born under this sign

aright adverb : RIGHT, CORRECTLY

arise verb arose ; aris·en ; aris·ing 1 : to get up

2 a : to originate from a source

b : to come into being or to attention

3 : to move upward : ASCEND

Synonyms

[2a] begin, commence, dawn, form, materialize, originate, spring, start—more at BEGIN

[2b] crop, emerge, materialize, spring, surface; also appear, come out, show up, turn up

[3] ascend, climb, lift, mount, rise, soar, up—more at ASCEND

ar·is·toc·ra·cy noun, plural -cies 1 : government by a noble or privileged class; also : a state so governed

2 : the governing class of an aristocracy

3 : UPPER CLASS

aris·to·crat noun : a member of an aristocracy

Synonyms

gentleman, grandee, noble, patrician—more at GENTLEMAN

aris·to·crat·ic adjective : belonging to, having the qualities of, or favoring aristocracy

Synonyms

genteel, gentle, grand, highborn, noble, patrician, wellborn—more at NOBLE

arith abbreviation arithmetic; arithmetical

arith·me·tic noun 1 : a branch of mathematics that deals with computations usu. with nonnegative real numbers

2 : the process or an act of computing or calculating : COMPUTATION, CALCULATION

— ar·ith·met·ic or ar·ith·met·i·cal adjective

— ar·ith·met·i·cal·ly adverb

— arith·me·ti·cian noun

Synonyms

calculation, computation, reckoning—more at CALCULATION

arithmetic mean noun : the sum of a set of numbers divided by the number