impermanent

impermanent
    adj 1: not permanent; not lasting; "politics is an impermanent
           factor of life"- James Thurber; "impermanent palm
           cottages"; "a temperary arrangement"; "temporary housing"
           [syn: {impermanent}, {temporary}] [ant: {lasting},
           {permanent}]
    2: existing or enduring for a limited time only
    

Impermanent \Im*per"ma*nent\, a.
   Not permanent.
   [1913 Webster]
    

64 Moby Thesaurus words for "impermanent":
      able to adapt, adaptable, adjustable, alterable, alterative,
      brittle, capricious, changeable, checkered, corruptible, deciduous,
      dying, ephemeral, evanescent, ever-changing, fading, fickle,
      fleeting, flexible, flitting, fluid, fly-by-night, flying, fragile,
      frail, fugacious, fugitive, impetuous, impulsive, inconstant,
      insubstantial, kaleidoscopic, malleable, many-sided, metamorphic,
      mobile, modifiable, momentary, mortal, movable, mutable,
      nondurable, nonpermanent, nonuniform, passing, perishable,
      permutable, plastic, protean, proteiform, resilient, rubbery,
      short-lived, supple, temporal, temporary, transient, transitive,
      transitory, undurable, unenduring, unstable, variable, volatile