81 entries under original topic. ×
| significant(adjective, important, essential, critical) | |
| elementary(adjective, important, head, significant, beginning) | |
| rudimentary(adjective, important, head, significant, beginning) | |
| basal(adjective, lead, important, head, significant) | |
| ruling(adjective, important, significant, serious) | |
| aboriginal(adjective, head, beginning, opening) | |
| critical(adjective, important, essential, basic) | |
| elemental(adjective, important, significant, essential) | |
| primordial(adjective, important, head, significant, beginning) | |
| requisite(adjective, important, significant, essential) | |
| sovereign(outstanding, best, prominent, prime) | |
| bottom-line(adjective, important, significant, essential) | |
| constitutional(adjective, important, significant, basic) | |
| headmost(adjective, top, head, beginning) | |
| integral(important, significant, essential, critical) | |
| intrinsic(adjective, important, significant, essential) | |
| primeval(adjective, head, beginning, opening) | |
| primitive(adjective, important, head, significant, beginning) | |
| ahead(adjective, head, beginning, opening) | |
| antecedent(adjective, head, beginning, opening) |
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| APA | Smart Define. (2015). cardinal thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/cardinal/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "cardinal thesaurus" https://smartdefine.org/cardinal/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, cardinal thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/cardinal/thesaurus/synonyms>. |
| MLA | Smart Define. "cardinal thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/cardinal/thesaurus/synonyms> |