239 entries under important topic. ×
| dire(adjective, heavy, serious, vital) | |
| doozie(big, outstanding, substantial, large) | |
| dynamite(big, substantial, large) | |
| earth-shattering(serious, critical, historic) | |
| elemental(adjective, original, essential, basic) | |
| elementary(adjective, original, essential, basic) | |
| end(exceptional, remarkable, notable, striking) | |
| exigent(adjective, great, big, heavy) | |
| fab(big, substantial, large) | |
| fat(adjective, big, heavy, substantial) | |
| foremost(large, vital, main, middle) | |
| foundational(adjective, original, essential, basic) | |
| front-page(big, substantial, valuable, vital) | |
| grass-roots(adjective, original, essential, basic) | |
| greatest(adjective, solid, extraordinary, unusual) | |
| hard(adjective, tough, severe, deep) | |
| harmonious(consistent, applicable, germane, pertinent) | |
| having direct bearing on(expression, consistent, related, applicable) | |
| having to do with(expression, consistent, related, applicable) | |
| high-profile(adjective, unusual, famous, exceptional) |
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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> |