108 entries under substantial topic. ×
| appreciable(significant, large) | |
| chief(big, significant, valuable, vital) | |
| consequential(significant, large, considerable) | |
| critical(big, significant, valuable, vital) | |
| crucial(big, significant, valuable, vital) | |
| distinguished(significant, large) | |
| doozie(significant, large) | |
| dynamite(significant, large) | |
| exceptional(big, significant, valuable, vital) | |
| fab(significant, large) | |
| gracious | |
| grave(big, significant, valuable, vital) | |
| magnanimous | |
| much(significant, large) | |
| munificent | |
| noteworthy(significant, large) | |
| noticeable(significant, large) | |
| openhanded | |
| reasonable(significant, large) | |
| renowned(strong, powerful, significant, large) |
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| APA | Smart Define. (2016). extensive thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/extensive/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "extensive thesaurus" https://smartdefine.org/extensive/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, extensive thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/extensive/thesaurus/synonyms>. |
| MLA | Smart Define. "extensive thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/extensive/thesaurus/synonyms> |