Aeonian
Aeonian adjective - Of or relating to a geological eon (longer than an era).
Marathon
Marathon adjective - Lasting for a considerable time.
Usage example: a marathon study session the night before the exam
Mutual synonyms
Cite this Source
Marathon and Aeonian. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/aeonian/marathon
Aeonian & Marathon. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/aeonian/marathon>.
Marathon or Aeonian. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/aeonian/marathon.
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