- Definitions|0
- Thesaurus|55
- Abbreviations|0
52 entries under significant topic. ×
| big(substantial, valuable, vital, imperative) | |
| big-league(vital, imperative) | |
| chief(big, substantial, valuable, vital) | |
| considerable(big, substantial, valuable, vital) | |
| conspicuous(vital, imperative) | |
| critical(big, substantial, valuable, vital) | |
| crucial(big, substantial, valuable, vital) | |
| decisive(big, substantial, valuable, vital) | |
| determining(big, substantial, valuable, vital) | |
| earnest(big, substantial, valuable, vital) | |
| essential(big, substantial, valuable, vital) | |
| esteemed(vital, imperative) | |
| exceptional(big, substantial, valuable, vital) | |
| exigent(big, substantial, valuable, vital) | |
| extensive(big, substantial, valuable, vital) | |
| far-reaching(big, substantial, valuable, vital) | |
| foremost(vital, imperative) | |
| front-page(big, substantial, valuable, vital) | |
| grave(big, substantial, valuable, vital) | |
| heavy(big, substantial, valuable, vital) |
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| APA | Smart Define. (2011). of substance thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/of_substance/thesaurus/synonyms |
| Chicago | Smart Define. 2011. "of substance thesaurus" https://smartdefine.org/of_substance/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2011, of substance thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/of_substance/thesaurus/synonyms>. |
| MLA | Smart Define. "of substance thesaurus" 23 May 2011. Web. 26 September 2026. <https://smartdefine.org/of_substance/thesaurus/synonyms> |