Synonyms|220Antonyms|102|Broader|4Narrower|0Related|828

45 entries under significant topic. ×

3
major(adjective, bad, great, excellent, superior)
2
big(important, historic)
2
celebrated(adjective, bad, great, excellent, extraordinary)
2
considerable(important, historic)
2
critical(adjective, great, important, lively)
2
grave(important, historic)
2
material(importance, important, historic)
2
serious(great, extraordinary, unusual, important)
2
substantial(important, historic)
1
chips are down(expression, idiom, important, historic)
1
earth-shaking(important, historic)
1
earth-shattering(important, historic)
1
epochal(important, historic)
1
extraordinary(adjective, great, unusual, important, famous)
1
far-reaching(important, historic)
1
heavy(great, unusual, important, serious)
1
heavy number(expression, important, historic)
1
important serious(expression, important, historic)
1
impressive(adjective, bad, great, excellent, extraordinary)
1
meaningful(important, outstanding, remarkable, notable)
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APASmart Define. (2015). eventful thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/eventful/thesaurus/synonyms
ChicagoSmart Define. 2015. "eventful thesaurus" https://smartdefine.org/eventful/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, eventful thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/eventful/thesaurus/synonyms>.
MLASmart Define. "eventful thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/eventful/thesaurus/synonyms>