Synonyms and Antonyms of fluid
1
capable of moving like a liquid
- warm the jam until it is fluid, then spread it over the cake
clotted, coagulated, gelatinous, gelled, jelled, jellied, thick
gluey, glutinous, gooey, gummy, viscous
2
capable of being readily changed
- the script is still fluid at this point, so be prepared for last-minute rewrites
established, fixed, immutable, inelastic, inflexible, invariable, nonmalleable, ramrod, set, unadaptable, unalterable, unbudgeable, unchangeable
3
involving minimal difficulty or effort
- the dance looked smooth and fluid, though backstage we could see the dancer gasping for breath and sweating from the effort
cheap, downhill, easy, effortless, facile, fluent, hands-down, light, painless, ready, royal, simple, smooth, snap, soft
idiotproof, mindless, quick, straightforward, unchallenging, uncomplicated
apparent, clear, clear-cut, distinct, evident, manifest, obvious, open-and-shut, palpable, patent, perspicuous, plain, transparent, unambiguous, unequivocal, unmistakable
burdensome, exhausting, onerous, oppressive, painful, stressful, taxing, troublesome
abstruse, complex, complicated, intricate, involved, knotty, problematic (also problematical), recondite
arduous, demanding, difficult, exacting, formidable, grueling (or gruelling), hard, herculean, killer, labored, laborious, murderous, rough, severe, stiff, strenuous, toilful, toilsome, tough
4
likely to change frequently, suddenly, or unexpectedly
- his arrival plans are fluid, so expect him anytime
capricious, changeable, changeful, fickle, flickery, fluctuating, inconsistent, inconstant, mercurial, mutable, skittish, temperamental, uncertain, unpredictable, unsettled, unstable, unsteady, variable, volatile
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, versatile
equable, even, uniform
abiding, durable, lasting, permanent, persistent
dependable, reliable, sure, tried, tried-and-true, true, trustworthy, trusty
certain, changeless, constant, immutable, invariable, predictable, settled, stable, stationary, steady, unchangeable, unchanging, unvarying
