| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | explosive, changeable |
| Synonyms: | airy, buoyant, capricious, effervescent, elastic, elusive, ephemeral, erratic, expansive, fickle, fleeting, flighty, flippant, frivolous, fugacious, fugitive, gaseous, gay, giddy, impermanent, imponderable, inconsistent, inconstant, light, lively, lubricious, mercurial, momentary, playful, resilient, short-lived, sprightly, subtle, temperamental, ticklish, transient, transitory, unsettled, unstable, unsteady, up-and-down, vaporous, variable, whimsical |
| Antonyms: | calm, firm, stable, steadfast |
| Main Entry: | airy |
| Part of Speech: | adjective |
| Definition: | delicate or ethereal |
| Synonyms: | dainty, diaphanous, flimsy, fragile, frail, frivolous, illusory, imaginary, immaterial, intangible, light, rare, rarefied, tenuous, thin, vaporous, visionary, volatile, weightless, wispy |
| Antonyms: | heavy |
| Main Entry: | airy |
| Part of Speech: | adjective |
| Definition: | buoyant, light, or lively in nature |
| Synonyms: | animated, blithe, bouncy, cheerful, cheery, effervescent, elastic, fanciful, flippant, frolicsome, gay, graceful, happy, high-spirited, jaunty, light, light-hearted, merry, nonchalant, resilient, sprightly, volatile, whimsical |
| Antonyms: | burdensome, heavy |
| 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: | combustible |
| Part of Speech: | adjective |
| Definition: | able to be exploded |
| Synonyms: | burnable, comburent, combustive, explosive, fiery, firing, flammable, ignitable, incendiary, inflammable, kindling, volatile |
| Antonyms: | noncombustible, nonexplosive |
| Main Entry: | delicate |
| Part of Speech: | adjective |
| Definition: | difficult, sticky (situation) |
| Synonyms: | critical, hair-trigger, precarious, sensitive, ticklish, touchy, tricky, uncertain, unpredictable, volatile |
| Main Entry: | effervescent |
| Part of Speech: | adjective |
| Definition: | fizzing, foaming |
| Synonyms: | airy, boiling, bouncy, bubbling, bubbly, carbonated, elastic, expansive, fermenting, frothing, frothy, resilient, sparkling, volatile |
| Antonyms: | flat, stale |
| Main Entry: | elastic |
| Part of Speech: | adjective |
| Definition: | adaptable, tolerant |
| Synonyms: | accommodating, adjustable, airy, animated, bouncy, buoyant, complaisant, compliant, ebullient, effervescent, expansive, flexible, gay, high-spirited, lively, recuperative, resilient, soaring, spirited, sprightly, supple, variable, vivacious, volatile, yielding |
| Antonyms: | difficult, inflexible, intolerant, unadaptable, ungiving |