105 entries under substantial topic. ×
| influential(big, important, significant, large) | |
| material(big, heavy, important, significant) | |
| meaningful(big, heavy, important, significant) | |
| momentous(big, heavy, important, significant) | |
| mondo(big, important, significant, large) | |
| noteworthy(big, important, significant, large) | |
| renowned(big, important, significant, large) | |
| significant(adjective, big, heavy, important) | |
| sizable(adjective, great, big, full, significant) | |
| solid gold(expression, bright, big, important) | |
| something(big, important, significant, large) | |
| something else(expression, big, important, significant) | |
| super(great, big, important, significant) | |
| super-duper(big, important, significant, large) | |
| to the max(expression, idiom, big, important) | |
| unreal(big, important, significant, amazing) | |
| venerable(big, important, significant, large) | |
| fab(bright, big, important, rich) | |
| appreciable(significant, large) | |
| astronomical(significant, large) |
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| APA | Smart Define. (2016). fat thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/fat/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "fat thesaurus" https://smartdefine.org/fat/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, fat thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/fat/thesaurus/synonyms>. |
| MLA | Smart Define. "fat thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/fat/thesaurus/synonyms> |