96 entries under important topic. ×
| grave(adjective, great, big, significant) | |
| heavy(big, significant, substantial, valuable) | |
| leading(adjective, serious, capital, essential) | |
| major(adjective, significant, original, essential) | |
| meaningful(adjective, big, significant, substantial) | |
| meat-and-potatoes(adjective, significant, original, essential) | |
| name(essential, critical, basic, fundamental) | |
| name-of-the-game(essential, critical, basic, fundamental) | |
| nitty-gritty(adjective, original, essential, critical) | |
| original(adjective, body, material, significant) | |
| powerful(adjective, prominent, exalted) | |
| primordial(adjective, significant, original, essential) | |
| radical(adjective, significant, original, essential) | |
| rudimentary(adjective, significant, original, essential) | |
| salient(big, significant, substantial, valuable) | |
| structural(material, natural, original, basic) | |
| substratal(adjective, significant, original, essential) | |
| substrative(adjective, significant, original, essential) | |
| supporting(adjective, significant, original, essential) | |
| sustaining(adjective, significant, original, essential) |
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| APA | Smart Define. (2015). necessary thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/necessary/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "necessary thesaurus" https://smartdefine.org/necessary/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, necessary thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/necessary/thesaurus/synonyms>. |
| MLA | Smart Define. "necessary thesaurus" 2 November 2015. Web. 23 September 2026. <https://smartdefine.org/necessary/thesaurus/synonyms> |