inconsistent

1 not being in agreement or harmony inconsistent theories make it difficult to settle on one explanation Synonyms clashing, conflicting, disagreeing, discordant, discrepant, incompatible, incongruous, inconsonant, inharmonious, mutually exclusive, repugnant Related Words irreconcilable; antagonistic, antipodal, antipodean, antithetical, contradictory, contrary, diametric (or diametrical), opposing, opposite Phrases at odds, at variance Near Antonyms akin, like, similar Antonyms accordant, agreeing, compatible, concordant, conformable (to), congruent, congruous, consistent, consonant, correspondent (with or to), harmonious, nonconflicting

2 likely to change frequently, suddenly, or unexpectedly an inconsistent breeze was our only relief from the heat Synonyms capricious, changeable, changeful, flickery, fluctuating, fluid, fickle, inconstant, mercurial, mutable, skittish, temperamental, uncertain, unpredictable, unsettled, unstable, unsteady, variable, volatileRelated Words aimless, arbitrary, desultory, erratic, haphazard, hit-or-miss, irregular, random, scattered, slapdash, stray; ambivalent, hesitating, shaky, shilly-shally, shilly-shallying, vacillating, wavering; dicey, undependable, unreliable, untrustworthy; adaptable, mobile, protean, versatileNear Antonyms equable, even, uniform; abiding, durable, lasting, permanent, persistent; dependable, reliable, sure, tried, tried-and-true, true, trustworthy, trustyAntonyms certain, changeless, constant, immutable, invariable, predictable, settled, stable, stationary, steady, unchangeable, unchanging, unvarying