Impermanent and Timeless

Impermanent

Impermanent adjective - Intended to last, continue, or serve for a limited time.
Usage example: built an impermanent structure to serve for the archaeologists' living quarters during the dig

Timeless is an antonym for impermanent.

Timeless

Timeless adjective - Having an existence or validity that does not change or diminish.

Impermanent is an antonym for timeless.
Cite this Source
Timeless and Impermanent. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/impermanent/timeless
Impermanent & Timeless. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/impermanent/timeless>.
Timeless or Impermanent. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/impermanent/timeless.
Google Ngram Viewer shows how "impermanent" and "timeless" have occurred on timeline