(a.) Liable to perish; subject to decay, destruction, or death; as, perishable goods; our perishable bodies.

brittle capricious changeable corruptible deciduous dying ephemeral evanescent fading fickle fleeting flitting fly-by-night flying fragile frail fugacious fugitive impermanent impetuous impulsive inconstant insubstantial momentary mortal mutable nondurable nonpermanent passing short-lived subject to death temporal temporary transient transitive transitory undurable unenduring unstable volatile