58 entries under original topic. ×
| radical(adjective, important, significant, essential) | |
| rudimentary(adjective, important, significant, essential) | |
| structural(material, important, natural, basic) | |
| substratal(adjective, important, significant, essential) | |
| substrative(adjective, important, significant, essential) | |
| supporting(adjective, important, significant, essential) | |
| sustaining(adjective, important, significant, essential) | |
| theoretical(adjective, important, significant, essential) | |
| underived(adjective, important, significant, essential) | |
| concealed(adjective, basic, fundamental, hidden) | |
| deep(basic, primary) | |
| deep-seated(basic, primary) | |
| hidden(adjective, basic, fundamental, primary) | |
| latent(adjective, basic, fundamental, hidden) | |
| lurking(adjective, basic, fundamental, hidden) | |
| nub(adjective, basic, fundamental, primary) | |
| root(adjective, basic, fundamental, hidden) | |
| veiled(adjective, basic, fundamental, hidden) |
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| APA | Smart Define. (2015). necessary thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/necessary/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "necessary thesaurus" https://smartdefine.org/necessary/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, necessary thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/necessary/thesaurus/synonyms>. |
| MLA | Smart Define. "necessary thesaurus" 2 November 2015. Web. 26 September 2026. <https://smartdefine.org/necessary/thesaurus/synonyms> |