ephemerality

ephemeral +‎ -ity

ephemerality (countable and uncountable, plural ephemeralities)

1. (uncountable) The state or condition of being ephemeral; transience.
   • 2024 May 10, Lily Stewart, “A love letter to lilacs and the joys of fleeting pleasure”, in The Christian Science Monitor:

     But in that quest, we sometimes lose sight of a central tenet: Nature’s ephemerality makes it all the more enchanting.

2. (countable) Something that is ephemeral.
   • 1961, Lewis Mumford, The City in History, Harcourt, Brace & World, page 242:

     So, too, the multiplication of bathrooms and the over-expenditure on broadly paved motor roads, and above all, the massive collective concentration on glib ephemeralities of all kinds, performed with supreme technical audacity.

• (state or condition of being ephemeral): ephemeralness, evanescence, impermanence, transience, transiency, volatility; see also Thesaurus:transience