4
decisive(adjective, great, important, lively, significant)
4
fateful(adjective, important, lively, significant, exciting)
3
full of incident(expression, idiom, eventuality)
3
great(adjective, bad, excellent, extraordinary, superior)
3
interesting(adjective, great, extraordinary, important, significant)
3
major(adjective, bad, great, excellent, superior)
3
unforgettable(adjective, great, extraordinary, importance, outstanding)
2
big(important, significant, historic)
2
celebrated(adjective, bad, great, excellent, extraordinary)
2
considerable(important, significant, historic)
2
critical(adjective, great, important, lively, significant)
2
grave(important, significant, historic)
2
illustrious(adjective, great, extraordinary, outstanding, prominent)
2
marvelous(adjective, wonderful, exceptional, terrific, stupendous)
2
material(importance, important, significant, historic)
2
monumental(great, extraordinary, outstanding, remarkable, notable)
2
phenomenal(adjective, bad, great, excellent, superior)
2
pregnant
2
prominent(adjective, great, importance, unusual, wonderful)
2
serious(great, extraordinary, unusual, important, significant)
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APASmart Define. (2015). eventful thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/eventful/thesaurus/synonyms
ChicagoSmart Define. 2015. "eventful thesaurus" https://smartdefine.org/eventful/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, eventful thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/eventful/thesaurus/synonyms>.
MLASmart Define. "eventful thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/eventful/thesaurus/synonyms>