85 entries under essential topic. ×
| urgent(adjective, great, big, significant, substantial) | |
| all-important(adjective, significant, basic, vital) | |
| binding(adjective, significant, basic, vital) | |
| bottom-line(adjective, significant, basic, vital) | |
| compulsory(adjective, significant, basic, vital) | |
| de rigueur(expression, adjective, significant, basic) | |
| decisive(adjective, great, big, important, significant) | |
| exigent(adjective, big, significant, substantial, large) | |
| expedient(adjective, significant, basic, vital) | |
| imperative(adjective, big, important, significant, substantial) | |
| incumbent on(expression, adjective, significant, basic) | |
| intrinsic(fundamental, key, principal, elementary) | |
| mandatory(adjective, significant, basic, vital) | |
| name of game(expression, adjective, idiom, significant) | |
| needed(adjective, important, significant, capital) | |
| obligatory(adjective, significant, basic, vital) | |
| prerequisite(adjective, important, significant, capital) | |
| pressing(adjective, big, important, significant, substantial) | |
| primitive(top, original, fundamental, key) | |
| specified(adjective, significant, basic, vital) |
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| APA | Smart Define. (2016). chief thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/chief/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "chief thesaurus" https://smartdefine.org/chief/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, chief thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/chief/thesaurus/synonyms>. |
| MLA | Smart Define. "chief thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/chief/thesaurus/synonyms> |