variable

1 capable of being readily changed a variable expense that we could reduce if we needed to Synonyms adaptable, adjustable, alterable, changeable, elastic, fluid, malleable, modifiable, pliable, flexibleRelated Words changing, fluctuating, inconstant, labile, unstable, unsteady, varying, versatileNear Antonyms constant, stable, steady, unchanging, uniform, unvaryingAntonyms established, fixed, immutable, inelastic, inflexible, invariable, nonmalleable, ramrod, set, unadaptable, unalterable, unbudgeable, unchangeable

2 likely to change frequently, suddenly, or unexpectedly highly variable income from his job as a real estate agent Synonyms capricious, changeable, changeful, flickery, fluctuating, fluid, inconsistent, inconstant, mercurial, mutable, skittish, temperamental, uncertain, unpredictable, unsettled, unstable, unsteady, fickle, 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