- Definitions|2
- Thesaurus|1.7k
- Abbreviations|0
106 entries under substantial topic. ×
| serious(big, unusual, significant, valuable) | |
| sizable(significant, definite, large, considerable) | |
| something(big, significant, large, valuable) | |
| something else(expression, unusual, large, serious) | |
| standout(adjective, great, big, wonderful, exceptional) | |
| tangible(plain, exact, significant, definite) | |
| urgent(big, significant, valuable, vital) | |
| venerable(adjective, great, famous, outstanding, significant) | |
| vital(big, significant, valuable, imperative) | |
| weighty(solid, extraordinary, unusual, powerful, significant) | |
| abundant(significant, large) | |
| ample(significant, large) | |
| ascertainable(significant, definite, considerable) | |
| astronomical(significant, large) | |
| bountiful(significant, large) | |
| comfortable(significant, large) | |
| commodious(significant, large) | |
| consequential(significant, large) | |
| critical(big, significant, valuable, vital) | |
| doozie(significant, large) |
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| APA | Smart Define. (2015). marked thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/marked/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "marked thesaurus" https://smartdefine.org/marked/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, marked thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/marked/thesaurus/synonyms>. |
| MLA | Smart Define. "marked thesaurus" 17 July 2015. Web. 23 September 2026. <https://smartdefine.org/marked/thesaurus/synonyms> |