(a.) Continuing only for a short time; not enduring; fleeting; evanescent\.

able to adapt adaptable adjustable alterable alterative brief brittle capricious changeable checkered circumforaneous corruptible deciduous discursive divagatory drifting dying ephemeral errant evanescent ever-changing fading fickle fleeting flexible flitting floating fluid fly-by-night flying footloose footloose and fancy-free fragile frail fugacious fugitive gadding gypsy-like gypsyish impermanent impetuous impulsive inconstant insubstantial kaleidoscopic landloping malleable many-sided meandering metamorphic migrational migratory mobile modifiable momentary mortal movable mutable nomad nomadic nondurable nonpermanent nonuniform passing perishable permutable plastic protean proteiform rambling ranging resilient roaming roving rubbery shifting short-lived short-term straggling straying strolling supple temporal temporary traipsing transient transitive transmigratory transubstantiate undurable unenduring unstable vagabond vagrant variable volatile wandering