| Main Entry: | mercurial |
| Part of Speech: | adjective |
| Definition: | flighty, temperamental |
Synonyms: |
blowing hot and cold, bubbleheaded, buoyant, capricious, changeable, effervescent, elastic, erratic, expansive, fickle, flaky, flip*, fluctuating, gaga, gay, impulsive, inconstant, irregular, irrepressible, lighthearted, lively, lubricious, mad, mobile, movable, quicksilver, resilient, short-fuse, spirited, sprightly, ticklish, unpredictable, unstable, up-and-down, variable, volatile, yo-yo |
Antonyms: |
calm, tranquil, unchangeable, unperturbable, unvarying |
| Main Entry: | agile |
| Part of Speech: | adjective |
| Definition: | physically or mentally nimble, deft |
Synonyms: |
active, acute, alert, athletic, brisk, buoyant, bustling, clever, dexterous, easy-moving, energetic, fleet, frisky, limber, lithe, lively, mercurial, prompt, quick, quick on the draw, quick on the trigger, quick-witted, rapid, ready, sharp, spirited, sportive, spright, sprightly, spry, stirring, supple, swift, twinkle toes, vigorous, vivacious, winged, zippy |
Antonyms: |
brittle, clumsy, stiff |
| Main Entry: | capricious |
| Part of Speech: | adjective |
| Definition: | given to sudden behavior change |
Synonyms: |
any way the wind blows, arbitrary, blowing hot and cold, careless, changeful, contrary, crotchety, effervescent, erratic, every which way, fanciful, fickle, fitful, flaky*, flighty, freakish, gaga, helter-skelter, humorsome, impulsive, inconstant, kinky*, lubricious, mercurial, moody, mutable, notional, odd, picky*, punchy, queer, quirky, temperamental, ticklish, unpredictable, unreasonable, unstable, up and down, vagarious, variable, volatile, wayward, whimsical, yo-yo |
Antonyms: |
constant, dependable, sensible, staid, steadfast, steady |
| Main Entry: | changeable |
| Part of Speech: | adjective |
| Definition: | erratic |
Synonyms: |
agitated, capricious, changeful, commutative, convertible, fickle, fitful, flighty, fluctuating, fluid, impulsive, inconstant, indecisive, irregular, irresolute, irresponsible, kaleidoscopic, mercurial, mobile, movable, mutable, permutable, protean, restless, reversible, revocable, shifting, skittish, spasmodic, transformable, transitional, uncertain, unpredictable, unreliable, unsettled, unstable, unsteady, vacillating, vagrant, variable, variant, varying, versatile, volatile, wavering, whimsical |
Antonyms: |
certain, changeless, constant, fixed, lasting, reliable, stable, steady, sure, unchangeable, undeviating |
| Main Entry: | erratic |
| Part of Speech: | adjective |
| Definition: | unpredictable; wandering |
Synonyms: |
aberrant, abnormal, anomalous, arbitrary, bizarre, capricious, changeable, desultory, devious, dicey, directionless, dubious, eccentric, fitful, flaky*, fluctuant, idiosyncratic, iffy, incalculable, inconsistent, inconstant, irregular, meandering, mercurial, nomadic, oddball, peculiar, planetary, rambling, roving, shifting, spasmodic, strange, stray, uncertain, undirected, unnatural, unreliable, unstable, unusual, vagarious, variable, volatile, wayward, weird, whimsical |
Antonyms: |
certain, consistent, definite, dependable, predictable, regular, reliable, steady, sure, unchanging |
| Main Entry: | excitable |
| Part of Speech: | adjective |
| Definition: | easily upset or inspired |
Synonyms: |
agitable, alarmable, demonstrative, edgy, emotional, enthusiastic, fidgety, fierce, fiery, galvanic, hasty, high-strung, hot-headed, hot-tempered, hysterical, impatient, impetuous, impulsive, inflammable, intolerant, irascible, mercurial, moody, nervous, neurotic, overzealous, passionate, peevish, quick, quick-tempered, rash, reckless, restless, sensitive, short fused, skittish, susceptible, temperamental, testy, touchy, uncontrolled, uneasy, vehement, violent, volatile, volcanic |
Antonyms: |
calm, easy, easy-going, insensitive, laid-back, passive, unexcitable, uninspired |
| Main Entry: | fickle |
| Part of Speech: | adjective |
| Definition: | vacillating, blowing hot and cold |
Synonyms: |
arbitrary, capricious, changeable, cheating, coquettish, double-crossing, faithless, fitful, flighty, frivolous, inconstant, irresolute, lubricious, mercurial, mutable, quicksilver, sneaking, temperamental, ticklish, two-timing, unfaithful, unpredictable, unstable, unsteady, untrue, variable, volatile, whimsical, yo-yo |
Antonyms: |
aware, cognizant, constant, faithful, reliable, stable, steady |
| Main Entry: | fleet |
| Part of Speech: | adjective |
| Definition: | quick in movement |
Synonyms: |
agile, barreling, breakneck, brisk, expeditious, expeditive, fast, flying, hasty, in nothing flat, like greased lightning, lively, mercurial, meteoric, nimble, nimble-footed, on the double, rapid, screaming, speedball, speedy, swift, winged |
Antonyms: |
clumsy, slow |
| Main Entry: | flighty |
| Part of Speech: | adjective |
| Definition: | fickle, irresponsible |
Synonyms: |
airheaded, birdbrained, bubbleheaded, capricious, changeable, dingbat, dingdong, dizzy*, effervescent, empty-headed, featherbrained, frivolous, gaga, giddy, harebrained, impetuous, impulsive, inconstant, lightheaded, lively, mercurial, scatterbrained, silly, thoughtless, twit, unbalanced, unstable, unsteady, volatile, whimsical, wild |
Antonyms: |
responsible |
| Main Entry: | fluid |
| Part of Speech: | adjective |
| Definition: | adaptable, changeable |
Synonyms: |
adjustable, changeful, flexible, floating, fluctuating, indefinite, malleable, mercurial, mobile, mutable, protean, shifting, unsettled, unstable, unsteady, variable |
| Notes: | fluids include liquids and gases; a liquid is a fluid with a fixed volume, and a gas is a fluid that can expand indefinitely liquid is a substance that flows and takes on the form of its container; a fluid - substance with no fixed shape and yields easily to external pressure - can be a liquid but it can also be a gas |
Antonyms: |
inflexible, stable, unchangeable |