70 entries under fundamental topic. ×
| name(important, essential, critical, basic) | |
| name-of-the-game(important, essential, critical, basic) | |
| necessitous(important, capital, essential, vital) | |
| needed(adjective, important, significant, capital, essential) | |
| nitty-gritty(adjective, important, original, essential, critical) | |
| nub(adjective, original, basic, absolute) | |
| prerequisite(adjective, important, significant, capital, essential) | |
| quintessential(adjective, significant, essential, basic, vital) | |
| required(adjective, important, significant, capital, essential) | |
| substratal(adjective, important, significant, original, essential) | |
| underlined(important, essential, critical, basic) | |
| urgent(adjective, important, significant, essential, critical) | |
| wanted(adjective, important, significant, capital, essential) | |
| all-important(adjective, significant, essential, basic, vital) | |
| binding(adjective, significant, essential, basic, vital) | |
| concealed(adjective, original, basic, primary) | |
| de rigueur(expression, adjective, significant, essential, basic) | |
| exigent(adjective, significant, essential, basic, vital) | |
| expedient(adjective, significant, essential, basic, vital) | |
| hidden(adjective, original, basic, primary) |
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Cardinal on
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| APA | Smart Define. (2015). cardinal thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/cardinal/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "cardinal thesaurus" https://smartdefine.org/cardinal/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, cardinal thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/cardinal/thesaurus/synonyms>. |
| MLA | Smart Define. "cardinal thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/cardinal/thesaurus/synonyms> |