37 entries under basic topic. ×
| mandatory(adjective, set, significant, affected, essential) | |
| obligatory(adjective, sound, important, certain, true) | |
| required(adjective, significant, essential, vital) | |
| requisite(adjective, significant, essential, vital) | |
| indispensable(adjective, set, important, significant, essential) | |
| imperative(adjective, set, important, significant, essential) | |
| essential(adjective, set, important, significant, critical) | |
| binding(adjective, sound, certain, true, significant) | |
| compelling(adjective, violent, significant, essential) | |
| vital(adjective, set, important, significant, essential) | |
| pressing(adjective, important, significant, essential, critical) | |
| unavoidable(adjective, certain, significant, near, essential) | |
| exigent(adjective, important, significant, essential, critical) | |
| needed(adjective, set, significant, essential) | |
| urgent(adjective, important, significant, essential, critical) | |
| crucial(adjective, important, significant, essential, critical) | |
| de rigueur(expression, adjective, idiom, significant, essential) | |
| needful(adjective, set, significant, essential) | |
| prerequisite(adjective, set, significant, essential) | |
| decisive(adjective, set, significant, essential) |
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| APA | Smart Define. (2015). compulsory thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/compulsory/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "compulsory thesaurus" https://smartdefine.org/compulsory/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, compulsory thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/compulsory/thesaurus/synonyms>. |
| MLA | Smart Define. "compulsory thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/compulsory/thesaurus/synonyms> |