68 entries under significant topic. ×
| primitive(adjective, body, simple, plain, material) | |
| radical(adjective, base, important, last) | |
| central(adjective, important, original, essential) | |
| indispensable(adjective, characteristic, important, natural) | |
| crucial(adjective, important, original, essential) | |
| requisite(noun, adjective, important, want) | |
| integral(adjective, characteristic, body, material, important) | |
| important(adjective, original, essential, critical) | |
| primordial(adjective, important, head, beginning) | |
| bottom(noun, adjective, important, original) | |
| leading(adjective, important, head, beginning) | |
| paramount(adjective, important, original, essential) | |
| imperative(noun, adjective, important, essential) | |
| needful(adjective, original, essential, vital) | |
| predominant(adjective, important, original, essential) | |
| prerequisite(noun, adjective, important, want) | |
| required(adjective, important, essential, critical) | |
| center(noun, adjective, important, emotion) | |
| compulsory(adjective, essential, vital, fundamental) | |
| decisive(adjective, important, essential, critical) |
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| APA | Smart Define. (2015). basic thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/basic/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "basic thesaurus" https://smartdefine.org/basic/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, basic thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/basic/thesaurus/synonyms>. |
| MLA | Smart Define. "basic thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/basic/thesaurus/synonyms> |