fluid

adj.流动的；adj.多变的，不固定的

Merriam-Webster Online Dictionary
fluid (adjective)
1.
a) having particles that easily move and change their relative position without a separation of the mass and that easily yield to pressure capable of flowing
b) subject to change or movement - boundaries became fluid
2.
characterized by or employing a smooth easy style - the ballerina's fluid movements fluid recitation of his lines
3.
a) available for various uses - a fluid computer program
b) - liquid fluid assets
fluid (noun)
a substance (as a liquid or gas) tending to flow or conform to the outline of its container
Merriam-Webster Online Thesaurus
fluid (adjective)
1.
capable of moving like a liquid
SYNONYMS:
flowing, fluent, liquid
RELATED WORDS:
circumfluent, circumfluous; diluted, thin, watery, weak; semiliquid, semisolid
NEAR ANTONYMS:
clotted, coagulated, gelatinous, gelled, jelled, jellied, thick; gluey, glutinous, gooey, gummy, viscous
hard, nonliquid, solid
fluid (adjective)
2.
capable of being readily changed
SYNONYMS:
adaptable, adjustable, alterable, changeable, elastic, fluid, malleable, modifiable, pliable, variable
RELATED WORDS:
changing, fluctuating, inconstant, labile, unstable, unsteady, varying, versatile
NEAR ANTONYMS:
constant, stable, steady, unchanging, uniform, unvarying
established, fixed, immutable, inelastic, inflexible, invariable, nonmalleable, ramrod, set, unadaptable, unalterable, unbudgeable, unchangeable
fluid (adjective)
3.
involving minimal difficulty or effort
SYNONYMS:
cheap, downhill, effortless, facile, fluent, fluid, hands-down, light, painless, ready, royal, simple, smooth, snap, soft
RELATED WORDS:
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
NEAR ANTONYMS:
burdensome, exhausting, onerous, oppressive, painful, stressful, taxing, troublesome; abstruse, complex, complicated, intricate, involved, knotty, problematic ( problematical), recondite
arduous, demanding, difficult, exacting, formidable, grueling ( gruelling), hard, herculean, killer, labored, laborious, murderous, rough, severe, stiff, strenuous, toilful, toilsome, tough
fluid (adjective)
4.
likely to change frequently, suddenly, or unexpectedly
SYNONYMS:
capricious, changeable, changeful, flickery, fluctuating, fluid, inconsistent, inconstant, mercurial, mutable, skittish, temperamental, uncertain, unpredictable, unsettled, unstable, unsteady, variable, volatile
RELATED 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, versatile
NEAR ANTONYMS:
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
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