70 entries under fundamental topic. ×
| elementary(adjective, important, head, significant, beginning) | |
| basal(adjective, lead, important, head, significant) | |
| critical(adjective, important, original, essential, basic) | |
| elemental(adjective, important, significant, original, essential) | |
| meaningful(adjective, important, substantial, serious, essential) | |
| needful(adjective, important, significant, capital, essential) | |
| requisite(adjective, important, significant, original, essential) | |
| bottom-line(adjective, important, significant, original, essential) | |
| intrinsic(adjective, important, significant, original, essential) | |
| original(adjective, important, head, significant, beginning) | |
| primitive(adjective, important, head, significant, beginning) | |
| bottom(adjective, important, significant, original, essential) | |
| coal-and-ice(important, essential, critical, basic) | |
| compelling(adjective, significant, essential, basic, vital) | |
| compulsory(adjective, significant, essential, basic, vital) | |
| decisive(adjective, important, significant, essential, critical) | |
| deep-seated(adjective, original, basic, absolute) | |
| imperative(adjective, important, significant, capital, essential) | |
| life-or-death(important, essential, critical, basic) | |
| mandatory(adjective, significant, essential, basic, vital) |
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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> |