transience

/ˈtrænʃəns/
noun
  1. The quality of lasting only a short time; impermanence.
    • The transience of youth makes those years feel especially precious.
    • She wrote a poem about the transience of beauty and life.
    • The transience of the flowers reminded him to enjoy the moment.
Antonyms
What does "transience" mean? | whatsthatwordmean | whatsthatwordmean