45 entries under important topic. ×
| fundamental | |
| central | |
| epochal(adjective, significant) | |
| archetypal | |
| chips are down(expression, idiom, significant) | |
| classical | |
| decisive(great, extraordinary, lively, significant) | |
| earth-shattering | |
| exemplary | |
| far-reaching | |
| heavy(great, extraordinary, outstanding, significant) | |
| heavy number(expression, significant) | |
| ideal | |
| important serious(expression, significant) | |
| large | |
| of moment(expression, significant) | |
| paradigmatic | |
| pivotal | |
| prototypical | |
| quintessential |
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| APA | Smart Define. (2016). historic thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/historic/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "historic thesaurus" https://smartdefine.org/historic/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, historic thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/historic/thesaurus/synonyms>. |
| MLA | Smart Define. "historic thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/historic/thesaurus/synonyms> |