79 entries under main topic. ×
| influential(adjective, good, clear, great, importance) | |
| relevant(adjective, clear, appropriate, importance, big) | |
| portentous(adjective, importance, valuable, notable) | |
| chief(adjective, superior, big, unusual, important) | |
| telling(verb, adjective, good, clear, strong) | |
| essential(adjective, importance, big, important, original) | |
| decisive(adjective, great, extraordinary, big, important) | |
| key(adjective, importance, important, guide, original) | |
| principal(adjective, good, great, big, important) | |
| big-league(adjective, importance, valuable, notable) | |
| central(adjective, important, original, essential, basic) | |
| fateful(adjective, importance, valuable, notable) | |
| pivotal(adjective, important, serious, critical, vital) | |
| purposeful(adjective, importance, valuable, notable) | |
| significative(adjective, importance, valuable, notable) | |
| superior(adjective, unusual, important, rank, exceptional) | |
| grand(adjective, importance, valuable, notable) | |
| leading(adjective, good, important, powerful, rank) | |
| cardinal(adjective, important, original, essential, critical) | |
| fundamental(adjective, important, original, essential, critical) |
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| APA | Smart Define. (2016). significant thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/significant/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "significant thesaurus" https://smartdefine.org/significant/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, significant thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/significant/thesaurus/synonyms>. |
| MLA | Smart Define. "significant thesaurus" 4 March 2016. Web. 23 September 2026. <https://smartdefine.org/significant/thesaurus/synonyms> |