Aeonian
Aeonian adjective - Of or relating to a geological eon (longer than an era).
Cite this Source
Immense and Aeonian. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/aeonian/immense
Aeonian & Immense. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/aeonian/immense>.
Immense or Aeonian. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/aeonian/immense.
Google Ngram Viewer shows how "aeonian" and "immense" have occurred on timeline