140 entries under essential topic. ×
| binding(adjective, sound, inexorable, required) | |
| cardinal(noun, adjective, important, significant, original) | |
| compelling(adjective, reasonable, sensible, important, serious) | |
| exigent(adjective, important, substantial, serious, valuable) | |
| main(adjective, important, significant, original, capital) | |
| must(noun, adjective, right, want, need) | |
| need(noun, verb, want, certainty) | |
| pressing(adjective, important, substantial, serious) | |
| principal(adjective, body, material, big, important) | |
| requirement(noun, want, need, certainty) | |
| significant(adjective, big, important, original, substantial) | |
| wanted(adjective, important, capital, vital) | |
| chief(adjective, big, important, significant, substantial) | |
| critical(adjective, big, important, significant, substantial) | |
| prime(adjective, body, material, important, significant) | |
| de rigueur(expression, adjective, right, required) | |
| decisive(adjective, important, substantial, valuable) | |
| momentous(adjective, important, substantial, valuable) | |
| paramount(adjective, important, significant, original, substantial) | |
| central(adjective, important, significant, original) |
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| APA | Smart Define. (2015). necessary thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/necessary/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "necessary thesaurus" https://smartdefine.org/necessary/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, necessary thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/necessary/thesaurus/synonyms>. |
| MLA | Smart Define. "necessary thesaurus" 2 November 2015. Web. 23 September 2026. <https://smartdefine.org/necessary/thesaurus/synonyms> |