46 entries under basic topic. ×
| sustaining(adjective, important, significant, original, essential) | |
| underived(adjective, important, significant, original, essential) | |
| underlying(adjective, important, significant, original, essential) | |
| vital(adjective, important, significant, original, essential) | |
| bottom line(expression, important, significant, essential) | |
| deep-seated(original, primary) |
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| APA | Smart Define. (2015). theoretical thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/theoretical/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "theoretical thesaurus" https://smartdefine.org/theoretical/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, theoretical thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/theoretical/thesaurus/synonyms>. |
| MLA | Smart Define. "theoretical thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/theoretical/thesaurus/synonyms> |