97 entries under significant topic. ×
| big-deal(large, considerable) | |
| central(vital, imperative) | |
| chief(big, substantial, valuable, vital) | |
| consequential(substantial, large, considerable) | |
| critical(big, substantial, valuable, vital) | |
| crucial(big, substantial, valuable, vital) | |
| distinguished(substantial, large) | |
| doozie(substantial, large) | |
| durable(large, considerable) | |
| dynamite(substantial, large) | |
| exceptional(big, substantial, valuable, vital) | |
| extraordinary(strong, powerful, large, forceful) | |
| fab(substantial, large) | |
| firm(large, considerable) | |
| grave(big, substantial, valuable, vital) | |
| key(large, vital, considerable, imperative) | |
| main(vital, imperative) | |
| major-league(large, considerable) | |
| much(substantial, large) | |
| noteworthy(substantial, large) |
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| APA | Smart Define. (2016). extensive thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/extensive/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "extensive thesaurus" https://smartdefine.org/extensive/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, extensive thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/extensive/thesaurus/synonyms>. |
| MLA | Smart Define. "extensive thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/extensive/thesaurus/synonyms> |