| desirable(necessary, wanted, needed) | |
| urgent(adjective, important, significant, essential, critical) | |
| called for(verb, expression, adjective, phrasal verb, right) | |
| happy | |
| inevitable(adjective, obvious, obligatory, inescapable) | |
| obligated | |
| pressing(adjective, important, significant, serious, essential) | |
| de rigueur(expression, adjective, idiom, right, significant) | |
| constrained(verb, obliged) | |
| critical(adjective, important, essential, basic, fundamental) | |
| crucial(adjective, important, significant, serious, capital) | |
| forced | |
| important(adjective, essential, critical, vital, fundamental) | |
| incumbent | |
| involuntary | |
| must | |
| necessitated(verb, obliged) | |
| accepted(verb, adjective) | |
| anticipated(verb, necessary, wanted, needed) | |
| basic(adjective, important, significant, essential, critical) |
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| APA | Smart Define. (2015). required thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/required/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "required thesaurus" https://smartdefine.org/required/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, required thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/required/thesaurus/synonyms>. |
| MLA | Smart Define. "required thesaurus" 3 November 2015. Web. 21 September 2026. <https://smartdefine.org/required/thesaurus/synonyms> |