Definition of volatile :
1. A winged animal; wild fowl; game.
2. Capable of wasting away, or of easily passing into the aeriform state; subject to evaporation.
3. Fig.: Light- hearted; easily affected by circumstances; airy; lively; hence, changeable; fickle; as, a volatile temper.
4. Passing through the air on wings, or by the buoyant force of the atmosphere; flying; having the power to fly.
vapory, temperamental, quicksilver, teasing, vivacious, heavy, ticklish, unpredictable, animated, subtle, dense, volatilizable, playful, lively, light, airy, demure, active, vaporous, buoyant, sprightly, effervescent, expansive, solemn, vaporific, gay, gaseous, change, imponderable, vaporizable, fantastical, freakish, volatilisable, continue, merry, resilient, flippant, fantastic, evaporable, happy
irresolute (part of speech: adjective)
insipid, tentative, unwilling, undependable, weak, infirm, halfhearted, shy, unsure, dillydallying, watery, shifty, spineless, irresponsible, erratic, uncertain, hesitant, unresolved, shrinking, inconsistent, shilly-shally, yellow, fly-by-night, double-minded, undecided
excitable (part of speech: adjective)
explosive, passionate, stormy, reckless, touchy, excitable, crusty, irritable, short-tempered, ardent, tempestuous, fragile, nervous, fiery, combustible, quick-tempered, edgy, sensitive, hot-tempered, emotional, high-strung, volcanic, cranky, brittle, rash
motiveless (part of speech: adjective)
flitting, rambling, unmethodical, spastic, wayward, fleeting, careless, motiveless, systemless, adrift, wandering, impulsive, nonsystematic, haphazard, arbitrary, random, chancy, sporadic, irregular, fanciful, indecisive, whimsical, capricious, ambivalent, reasonless
transient (part of speech: adjective)
changeable (part of speech: adjective)
inconstant, unstable, flexible, alterable, reformable, adaptable, irresolute, transposable, unsteady, mercurial, transformable, variable, mutable, modifiable, restless, convertible, movable, precarious, wavering, vacillating, adjustable, fluid, changeable, protean, unsettled, versatile, fickle, changeful, vicissitudinous, varying, flighty, shifting, ever-changing
fickle (part of speech: adjective)
capricious (part of speech: adjective)
- To this latter circumstance it may be probably attributed, that, after incessantly complaining of the court of Rome, they at length completely shook off its disgraceful yoke; while a people of more light and volatile character has continued to wear it, affecting at the same time to laugh and dance in its chains. - "A Philosophical Dictionary, Volume 5 (of 10) From "The Works of Voltaire - A Contemporary Version"", François-Marie Arouet (AKA Voltaire) Commentator: John Morley Tobias Smollett H.G. Leigh.
- In this volatile creature, the funereal gloom of the moment before, and the suspense of an adventure on which all her future was staked, disappeared in a moment. - "The Room in the Dragon Volant", J. Sheridan LeFanu.
- Give wine, brandy, or sal- volatile when recovering, and persevere till actual signs of death are seen. - "The Book of Household Management", Mrs. Isabella Beeton.