| essence(condition, need, essential, basic, requirement) | |
| essentiality(need, essential, requirement) | |
| essentials | |
| exaction(need, essential, requirement, essentiality) | |
| exigency(noun, want, need, essential, certainty) | |
| exigent(adjective, significant, essential, basic, vital) | |
| familiarization | |
| fixing | |
| foundation | |
| godsend(need, essential, requirement, essentiality) | |
| grounds | |
| groundwork | |
| heavy(important, essential, critical, basic, fundamental) | |
| incumbent on(expression, adjective, significant, essential, basic) | |
| indicated | |
| indispensability(need, essential, requirement, essentiality) | |
| inescapable(adjective, required) | |
| inevitable(adjective, required) | |
| inexorability(noun, requirement) | |
| inexorable(adjective, required) |
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| APA | Smart Define. (2015). prerequisite thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/prerequisite/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "prerequisite thesaurus" https://smartdefine.org/prerequisite/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, prerequisite thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/prerequisite/thesaurus/synonyms>. |
| MLA | Smart Define. "prerequisite thesaurus" 4 September 2015. Web. 22 September 2026. <https://smartdefine.org/prerequisite/thesaurus/synonyms> |