96 entries under significant topic. ×
| something(big, outstanding, substantial, valuable) | |
| standout(great, extraordinary, big, substantial) | |
| superabundant(adjective, strong, solid, big, important) | |
| underlined(adjective, big, unusual, important, exceptional) | |
| valuable(big, substantial, large, vital) | |
| vast(deep, large, considerable, profound) | |
| worthwhile(adjective, strong, solid, big, important) | |
| big-deal(large, considerable) | |
| determining(big, substantial, valuable, vital) | |
| earth-shaking(important, historic) | |
| earth-shattering(important, historic) | |
| mattering much(expression, big, substantial, valuable) | |
| of substance(expression, big, substantial, valuable) | |
| pivotal(important, historic) | |
| sizable(large, sturdy, robust, considerable) | |
| tidy(large, considerable) |
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| APA | Smart Define. (2016). heavy thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/heavy/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "heavy thesaurus" https://smartdefine.org/heavy/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, heavy thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/heavy/thesaurus/synonyms>. |
| MLA | Smart Define. "heavy thesaurus" 25 January 2016. Web. 25 September 2026. <https://smartdefine.org/heavy/thesaurus/synonyms> |