50 entries under substantial topic. ×
| significant(big, important, large) | |
| solid gold(expression, bright, big, important) | |
| something(big, important, significant, large) | |
| super-duper(big, important, significant, large) | |
| to the max(expression, idiom, big, important) | |
| venerable(big, important, significant, large) | |
| weighty(big, important, significant, large) | |
| abundant(significant, large) | |
| ample(significant, large) | |
| appreciable(significant, large) | |
| astronomical(significant, large) | |
| bountiful(significant, large) | |
| comfortable(significant, large) | |
| commodious(significant, large) | |
| considerable(significant, large, striking, stupendous) | |
| extensive(significant, large) | |
| hefty(significant, large) | |
| huge(significant, amazing, large, astonishing) | |
| large-scale(significant, large) | |
| major(significant, large) |
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| APA | Smart Define. (2016). fab thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/fab/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "fab thesaurus" https://smartdefine.org/fab/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2016, fab thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/fab/thesaurus/synonyms>. |
| MLA | Smart Define. "fab thesaurus" 29 March 2016. Web. 24 September 2026. <https://smartdefine.org/fab/thesaurus/synonyms> |