impermanence

noun3

1. •
   Lack of permanence or continued duration.
2. •
   The quality or state of being impermanent.

   • I watch the ripples change their size / But never leave the stream of warm impermanence and / So the days float through my eyes / But still the days seem the same — 1971
3. •
   Anicca, the doctrine which asserts that all of conditioned existence is transient.