Synonyms and Antonyms of mercurial
likely to change frequently, suddenly, or unexpectedly the boss's mood is so mercurial that we never know how he's going to react to anything Synonyms capricious, changeable, changeful, flickery, fluctuating, fluid, inconsistent, inconstant, fickle, 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
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