70 entries under primary topic. ×
| sustaining(important, significant, original, basic, vital) | |
| theoretical(important, significant, original, basic, vital) | |
| transcendent(adjective, outstanding, head, prominent, prime) | |
| underived(adjective, simple, rough, important, significant) | |
| especial(adjective, individual, main, specific, typical) | |
| lurking(adjective, original, basic, fundamental, hidden) | |
| number one(expression, adjective, main, principal) | |
| telling(adjective, main, expressive, principal) | |
| topmost(adjective, fundamental, main, principal) | |
| veiled(adjective, original, basic, fundamental, hidden) |
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| APA | Smart Define. (2016). essential thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/essential/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "essential thesaurus" https://smartdefine.org/essential/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, essential thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/essential/thesaurus/synonyms>. |
| MLA | Smart Define. "essential thesaurus" 31 March 2016. Web. 22 September 2026. <https://smartdefine.org/essential/thesaurus/synonyms> |