83 entries under essential topic. ×
| controlling(adjective, outstanding, prominent, prime) | |
| integral(important, significant, original, critical) | |
| intrinsic(adjective, important, significant, original) | |
| original(adjective, important, head, significant, beginning) | |
| primitive(adjective, important, head, significant, beginning) | |
| prominent(adjective, outstanding, head, prime) | |
| bottom(adjective, important, significant, original) | |
| coal-and-ice(important, critical, basic, fundamental) | |
| compelling(adjective, significant, basic, vital) | |
| compulsory(adjective, significant, basic, vital) | |
| decisive(adjective, important, significant, critical) | |
| heavy(quality, tough, superior, important) | |
| imperative(adjective, important, significant, capital) | |
| life-or-death(important, critical, basic, fundamental) | |
| mandatory(adjective, significant, basic, vital) | |
| meat-and-potatoes(important, significant, original, critical) | |
| momentous(adjective, important, significant, substantial, serious) | |
| name(important, critical, basic, fundamental) | |
| name-of-the-game(important, critical, basic, fundamental) | |
| necessitous(important, capital, vital, fundamental) |
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| APA | Smart Define. (2015). cardinal thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/cardinal/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "cardinal thesaurus" https://smartdefine.org/cardinal/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, cardinal thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/cardinal/thesaurus/synonyms>. |
| MLA | Smart Define. "cardinal thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/cardinal/thesaurus/synonyms> |