Synonyms|123Antonyms|2|Broader|1Narrower|0Related|70

28 entries under significant topic. ×

6
momentous(adjective, important, historic)
2
consequential(important, historic)
2
far-reaching(important, historic)
2
historic(adjective, important)
1
big(important, historic)
1
chips are down(expression, idiom, important, historic)
1
considerable(important, historic)
1
decisive(important, historic)
1
earth-shaking(important, historic)
1
earth-shattering(important, historic)
1
eventful(important, historic)
1
fateful(important, historic)
1
grave(important, historic)
1
heavy(important, historic)
1
heavy number(expression, important, historic)
1
important serious(expression, important, historic)
1
material(important, historic)
1
memorable(important, historic)
1
of moment(expression, important, historic)
1
outstanding(important, historic)
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APASmart Define. (2016). epochal thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/epochal/thesaurus/synonyms
ChicagoSmart Define. 2016. "epochal thesaurus" https://smartdefine.org/epochal/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, epochal thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/epochal/thesaurus/synonyms>.
MLASmart Define. "epochal thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/epochal/thesaurus/synonyms>