impermanence
1. [ noun ] the property of not existing for indefinitely long durations
Synonyms: impermanency
Related terms: permanence duration mortality transience temporariness
Similar spelling:   impermanency
  impermanent
  impertinence
  imipramine
  imperforate
  impermeableness
  improperness
  imperturbable
  imperviable
  impertinent
  impersonate
  impermeable