Volatile

Adjective

 * 1)  evaporating or vaporizing readily under normal conditions.
 * 2)  explosive.
 * 3)  variable or erratic.
 * 4) fickle.
 * 5) temporary or ephemeral.
 * 6)  potentially violent.
 * 7)  having its associated memory immediately updated with any changes in value.

Derived terms

 * volatility
 * volatile memory

Thesaurus
adrift, afloat, agitable, airy, alternating, amorphous, birdbrained, birdwitted, bouncy, brittle, bubbly, buoyant, capricious, changeable, changeful, charged, coquettish, corruptible, deciduous, desultory, deviable, dizzy, downy, dying, eccentric, edgy, effervescent, ephemeral, erratic, eruptive, ethereal, evanescent, evaporable, evaporative, expansive, explosive, faddish, fading, fast and loose, featherbrained, feathery, fickle, fitful, fleeting, flickering, flighty, flippant, flirtatious, flitting, fluctuating, fluffy, fly-by-night, flying, foamy, fragile, frail, freakish, frivolous, frothy, fugacious, fugitive, giddy, gossamery, hair-trigger, impermanent, impetuous, imponderous, impulsive, inconsistent, inconstant, indecisive, infirm, insubstantial, irregular, irresolute, irresponsible, leger, light, light as air, light-minded, lighter than vanity, lubricious, mazy, mercurial, momentary, moody, mortal, mousse, mutable, nondurable, nonpermanent, passing, perishable, protean, quicksilver, rambling, resilient, restless, roving, scatterbrained, sensitive, shallow, shallow-headed, shallow-minded, shallow-pated, shallow-witted, shapeless, shifting, shifty, short-lived, shuffling, skittery, skittish, souffle, spasmodic, spineless, startlish, superficial, temperamental, temporal, temporary, tense, ticklish, toying, transient, transitive, transitory, unaccountable, uncertain, uncontrolled, undependable, undisciplined, undurable, unenduring, unfixed, unheavy, unpredictable, unprofound, unreliable, unrestrained, unsettled, unstable, unstable as water, unstaid, unsteadfast, unsteady, vacillating, vagrant, vaporable, vaporescent, vaporizable, vaporizing, variable, versatile, vicissitudinary, vicissitudinous, volatilizable, wandering, wanton, wavering, wavery, wavy, wayward, weightless, whimsical, wishy-washy, yeasty