| critical(adjective, great, important, lively, significant) | |
| epic | |
| established(state, establishment) | |
| extraordinary(adjective, great, outstanding, remarkable, notable) | |
| fundamental(adjective, important) | |
| heroic | |
| landmark(momentous, milestone) | |
| tremendous | |
| past | |
| breakthrough(momentous, milestone, landmark) | |
| central(adjective, important) | |
| diachronic | |
| epochal(adjective, important, significant) | |
| illustrious(adjective, great, extraordinary, outstanding, remarkable) | |
| lasting(adjective, great, extraordinary, outstanding, remarkable) | |
| legendary | |
| narrative | |
| old | |
| prominent | |
| red-letter(adjective, great, extraordinary, outstanding, remarkable) |
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Historic on
Power Thesaurus
| APA | Smart Define. (2016). historic thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/historic/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "historic thesaurus" https://smartdefine.org/historic/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, historic thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/historic/thesaurus/synonyms>. |
| MLA | Smart Define. "historic thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/historic/thesaurus/synonyms> |