94 entries under essential topic. ×
| compelling(adjective, important, significant, serious) | |
| imperative(adjective, big, important, significant, substantial) | |
| inherent(adjective, material, natural, basic) | |
| integral(adjective, body, material, important, significant) | |
| intrinsic(adjective, important, significant, original) | |
| needful(adjective, important, significant, original, capital) | |
| primitive(adjective, body, material, important, significant) | |
| required(adjective, important, significant, serious, capital) | |
| urgent(adjective, great, big, significant, substantial) | |
| axiological(adjective, important, significant, original) | |
| bottom(adjective, important, significant, original) | |
| bottom-line(adjective, important, significant, original) | |
| decisive(adjective, great, big, important, significant) | |
| exigent(adjective, big, significant, substantial, large) | |
| factor(basic, representative, operative, manager) | |
| foundational(adjective, important, significant, original) | |
| grass-roots(adjective, important, significant, original) | |
| meat-and-potatoes(adjective, important, significant, original) | |
| needed(adjective, important, significant, capital) | |
| prerequisite(adjective, important, significant, capital) |
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| APA | Smart Define. (2016). principal thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/principal/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "principal thesaurus" https://smartdefine.org/principal/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, principal thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/principal/thesaurus/synonyms>. |
| MLA | Smart Define. "principal thesaurus" 29 March 2016. Web. 26 September 2026. <https://smartdefine.org/principal/thesaurus/synonyms> |