202 entries under fundamental topic. ×
| profound(adjective, basic, intimate, secret) | |
| quintessential(adjective, characteristic, important, common, ordinary) | |
| concealed(adjective, individual, original, basic) | |
| connate(adjective, basic, intrinsicality) | |
| inmost(adjective, important, significant, basic, intimate) | |
| original(adjective, characteristic, body, simple, plain) | |
| particular(noun, adjective, drop, material, element) | |
| clear(adjective, simple, easy, plain, pure) | |
| hidden(adjective, individual, original, basic) | |
| keystone(noun, support, action, base, importance) | |
| nitty-gritty(noun, adjective, important, critical, essence) | |
| obligation(noun, right, want, need, certainty) | |
| want(noun, verb, right, concern, demand) | |
| axiom(noun, support, action, base, beginning) | |
| base(noun, support, action, part, beginning) | |
| decisive(adjective, severe, big, important, significant) | |
| foundational(adjective, simple, plain, pure, important) | |
| gravamen(importance, shorts, undercarriage) | |
| ideal(adjective, basic) | |
| immanent(adjective, characteristic, natural, basic) |
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| APA | Smart Define. (2016). essential thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/essential/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "essential thesaurus" https://smartdefine.org/essential/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, essential thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/essential/thesaurus/synonyms>. |
| MLA | Smart Define. "essential thesaurus" 31 March 2016. Web. 26 September 2026. <https://smartdefine.org/essential/thesaurus/synonyms> |