abrupt, blunt, brief, brittle, brusque, capricious, changeable, compendious, corruptible, crusty, curt, deciduous, disappearing, dissolving, dying, ephemeral, evanescent, evaporating, fading, fickle, flitting, fly-by-night, flying, fragile, frail, fugacious, fugitive, gruff, impermanent, impetuous, impulsive, inconstant, insubstantial, laconic, melting, momentary, mortal, mutable, nondurable, nonpermanent, passing, perishable, short-lived, short, short and sweet, snippety, snippy, succinct, temporal, temporary, terse, transient, transitive, transitory, undurable, unenduring, unstable, vanishing, volatile