221 entries under adjective topic. ×
| needed(important, significant, capital, essential) | |
| nitty-gritty(important, original, essential, critical) | |
| nub(original, basic, absolute, fundamental) | |
| numero uno(expression, head, beginning, prime) | |
| opening(head, beginning, original, prime) | |
| oxblood | |
| perinone | |
| persian red | |
| pioneer(head, beginning, opening, original) | |
| predominating | |
| premiere(lead, head, master, boss) | |
| prerequisite(important, significant, capital, essential) | |
| primaeval | |
| primogenial(head, beginning, opening, original) | |
| pristine(head, beginning, opening, original) | |
| quintessential(significant, essential, basic, vital) | |
| raspberry | |
| red-violet | |
| red wine | |
| required(important, significant, capital, essential) |
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| APA | Smart Define. (2015). cardinal thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/cardinal/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "cardinal thesaurus" https://smartdefine.org/cardinal/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, cardinal thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/cardinal/thesaurus/synonyms>. |
| MLA | Smart Define. "cardinal thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/cardinal/thesaurus/synonyms> |