156 entries under noun topic. ×
| fundamental(adjective, characteristic, drop, part) | |
| essential(adjective, characteristic, drop, part) | |
| necessary(adjective, body, material, important) | |
| cardinal(adjective, property, important, head) | |
| staple(adjective, set, usual, regular) | |
| requisite(adjective, important, want, significant) | |
| need(want, essential, fundamental, requirement) | |
| rudiment(law, drop, part, condition) | |
| bottom(adjective, important, significant, original) | |
| doctrine(rule, opinion, fundamental, principle) | |
| element(feature, drop, part, condition) | |
| necessity(condition, want, heart, essential) | |
| root(adjective, drop, part, material) | |
| foundation(law, stipulation, tenet, axiom) | |
| imperative(adjective, important, significant, essential) | |
| constituent(adjective, law, drop, part) | |
| part and parcel(expression, adjective, idiom, characteristic) | |
| prerequisite(adjective, important, want, significant) | |
| requirement(condition, want, essential, essence) | |
| bedrock |
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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> |