Thesaurus
irregular
adjective
Synonyms and Antonyms of IRREGULAR
1
departing from some accepted standard of what is normal <it was a bank customer's slightly irregular behavior that made people suspicious>
Synonyms aberrant, aberrational, abnormal, anomalous, atypical, deviate, devious, irregular, unnatural, untypical
Related Words unrepresentative; extraordinary, preternatural; rare, uncommon, uncustomary, unusual, unwonted; bizarre, curious, far-out, funny, kinky, odd, outlandish, out-of-the-way, outré, peculiar, quaint, queer, queerish, quirky, remarkable, screwy, strange, wacky (also whacky), way-out, weird, wild; eccentric, freakish, idiosyncratic, nonconformist, unconventional, unorthodox; extraordinary, preternatural; rare, uncommon, uncustomary, unusual, unwonted; odd, peculiar, strange
Near Antonyms common, commonplace, everyday, familiar, ordinary, routine, run-of-the-mill, run-of-the-mine (or run-of-mine), unexceptional, unremarkable, workaday; customary, usual, wonted; archetypal (also archetypical), average, characteristic, representative
2
lacking in steadiness or regularity of occurrence <irregular mail delivery to the island>
Synonyms aperiodic, casual, catchy, choppy, discontinuous, episodic (also episodical), erratic, intermittent, irregular, occasional, spasmodic, spastic, sporadic, spotty, unsteady
Related Words convulsive, sudden, violent; broken, disconnected, fragmentary, interrupted; aimless, arbitrary, desultory, haphazard, hit-and-miss, hit-or-miss, odd, random, scattered, slapdash, stray; capricious, changeful, changing, flickery, fluctuating, fluid, inconstant, mercurial, mutable, temperamental, uncertain, unpredictable, unsettled, unstable, varying, wavering; changeable, fickle, variable, volatile
Near Antonyms changeless, equable, even, stable, stationary, uniform; unchanging, unvarying, unwavering; methodical (also methodic), orderly, systematic; unrelenting, unremitting
3
not having a level or smooth surface <although the moon looks smooth from here, it actually has a very bumpy and irregular surface>
Synonyms broken, bumpy, coarse, irregular, jagged, lumpy, pebbly, ragged, rough, roughened, rugged, scraggy
Related Words lopsided, unbalanced; inexact, unaligned; rutted, rutty, undulating, undulatory, wavy; pitted, pocked; knobbly, knobby, knurled, knurly, nubbly, nubby; burred, harsh, sandpapery, scraggly, scratchy; nonuniform
4
not rigidly following established form, custom, or rules <the request is irregular, but I'll allow it>
Related Words unauthorized, unofficial; casual, easygoing, familiar, free and easy, lax, loose, offhand, relaxed, ultracasual
Near Antonyms correct, decorous, proper; constrained, inhibited, restrained, rigid, stiff, stuffy, uptight
5
not staying constant <irregular gusts of wind>
Related Words capricious, changeable, changeful, choppy, fickle, fluid, inconsistent, inconstant, mercurial, mutable, uncertain, unsettled, variable, volatile
Near Antonyms regular
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