26 entries under decisive topic. ×
| compulsory(adjective, set, significant, affected, essential) | |
| required(adjective, right, significant, essential, basic) | |
| obligatory(adjective, right, significant, affected, essential) | |
| imperative(adjective, set, significant, essential, basic) | |
| binding(adjective, set, significant, affected, essential) | |
| needed(adjective, set, significant, essential, basic) | |
| prerequisite(adjective, set, significant, essential, basic) | |
| de rigueur(expression, adjective, idiom, right, significant) | |
| compelling(adjective, significant, essential, basic, vital) | |
| needful(adjective, set, significant, essential, basic) | |
| pressing(adjective, significant, essential, basic, vital) | |
| exigent(adjective, significant, essential, basic, vital) | |
| urgent(adjective, significant, essential, basic, vital) | |
| all-important(adjective, significant, essential, basic, vital) | |
| chief(adjective, significant, essential, basic, vital) | |
| expedient(adjective, significant, essential, basic, vital) | |
| fundamental(adjective, significant, essential, basic, vital) | |
| incumbent on(expression, adjective, significant, essential, basic) | |
| name of game(expression, adjective, idiom, significant, essential) | |
| quintessential(adjective, significant, essential, basic, vital) |
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| APA | Smart Define. (2015). mandatory thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/mandatory/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "mandatory thesaurus" https://smartdefine.org/mandatory/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2015, mandatory thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/mandatory/thesaurus/synonyms>. |
| MLA | Smart Define. "mandatory thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/mandatory/thesaurus/synonyms> |