140 entries under essential topic. ×
| exigency(noun, want, need, certainty) | |
| first(adjective, important, significant, original) | |
| foremost(adjective, important, significant, capital) | |
| foundational(adjective, important, significant, original) | |
| godsend(need, requirement, prerequisite, essentiality) | |
| grass-roots(adjective, important, significant, original) | |
| heavy(big, important, significant, substantial, valuable) | |
| indispensability(noun, need, requirement, prerequisite) | |
| inevitability(noun, need, requirement, prerequisite) | |
| inexorableness(need, requirement, prerequisite, essentiality) | |
| leading(adjective, important, serious, capital) | |
| life or death(noun, expression, idiom, need) | |
| major(adjective, important, significant, original) | |
| meaningful(adjective, big, important, significant, substantial) | |
| meat-and-potatoes(adjective, important, significant, original) | |
| name(important, critical, basic, fundamental) | |
| name-of-the-game(important, critical, basic, fundamental) | |
| name of game(expression, adjective, idiom, required) | |
| needfulness(noun, need, requirement, prerequisite) | |
| nitty-gritty(adjective, important, original, critical) |
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| APA | Smart Define. (2015). necessary thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/necessary/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "necessary thesaurus" https://smartdefine.org/necessary/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, necessary thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/necessary/thesaurus/synonyms>. |
| MLA | Smart Define. "necessary thesaurus" 2 November 2015. Web. 24 September 2026. <https://smartdefine.org/necessary/thesaurus/synonyms> |