transience

from WordNet (r) 3.0 (2006)
transience
    n 1: an impermanence that suggests the inevitability of ending
         or dying [syn: {transience}, {transiency},
         {transitoriness}]
    2: the attribute of being brief or fleeting [syn: {brevity},
       {briefness}, {transience}]
    
from The Collaborative International Dictionary of English v.0.48
Transience \Tran"sience\, Transiency \Tran"sien*cy\, n.
   The quality of being transient; transientness.
   [1913 Webster]
    
from Moby Thesaurus II by Grady Ward, 1.0
38 Moby Thesaurus words for "transience":
      adaptability, adjustability, alterability, brevity, briefness,
      changeability, changeableness, changefulness, compactness,
      compendiousness, conciseness, curtness, death rate, death toll,
      flexibility, fluidity, impermanence, instantaneousness, littleness,
      lowness, malleability, mobility, modifiability, mortality,
      mortalness, movability, mutability, nonuniformity, permutability,
      plasticity, resilience, rubberiness, short time, shortness,
      succinctness, summariness, suppleness, transitoriness

    

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