82 entries under significant topic. ×
| of substance(expression, big, substantial, valuable) | |
| original(adjective, body, material, important) | |
| ponderous(big, substantial, valuable, vital) | |
| primordial(adjective, important, original, essential) | |
| radical(adjective, important, original, essential) | |
| rudimentary(adjective, important, original, essential) | |
| salient(big, important, substantial, valuable) | |
| signal(vital, imperative) | |
| something(big, substantial, valuable, vital) | |
| standout(big, substantial, valuable, vital) | |
| substantial(adjective, great, big, large) | |
| substratal(adjective, important, original, essential) | |
| substrative(adjective, important, original, essential) | |
| supporting(adjective, important, original, essential) | |
| sustaining(adjective, important, original, essential) | |
| theoretical(adjective, important, original, essential) | |
| underived(adjective, important, original, essential) | |
| valuable(adjective, great, big, substantial) | |
| bottom line(expression, important, essential, basic) | |
| exceptional(big, substantial, valuable, vital) |
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| APA | Smart Define. (2015). necessary thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/necessary/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "necessary thesaurus" https://smartdefine.org/necessary/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, necessary thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/necessary/thesaurus/synonyms>. |
| MLA | Smart Define. "necessary thesaurus" 2 November 2015. Web. 24 September 2026. <https://smartdefine.org/necessary/thesaurus/synonyms> |