210 entries under essential topic. ×
| number one(expression, adjective, head, beginning) | |
| outstanding(adjective, important, significant, original) | |
| principle(drop, part, rule, condition, material) | |
| quintessence(noun, condition, emotion, heart) | |
| quintessential(adjective, important, significant, vital) | |
| soul(noun, emotion, heart, mood) | |
| supreme(adjective, opening, original, prime) | |
| underlined(important, critical, fundamental, key) | |
| urgent(adjective, important, significant, critical) | |
| vital part(noun, expression, condition, essence) | |
| all-important(adjective, significant, vital, fundamental) | |
| aspect(drop, part, material, element) | |
| binding(adjective, significant, vital, fundamental) | |
| call(noun, requirement, prerequisite) | |
| categorical(adjective, fundamental, supreme) | |
| cause(requirement, prerequisite) | |
| character(noun, emotion, heart, mood) | |
| charge(noun, want, requirement, necessity) | |
| claim(requirement, prerequisite) | |
| combining |
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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> |