60 entries under main topic. ×
| radical(adjective, cause, base, importance, important) | |
| vital(adjective, body, importance, material, big) | |
| arch(adjective, order, top, lead, superior) | |
| highest(adjective, order, top, excellent, superior) | |
| supreme(adjective, order, excellent, big, heavy) | |
| superior(adjective, top, excellent, lead, big) | |
| head(noun, adjective, order, top, excellent) | |
| outstanding(adjective, important, head, significant, essential) | |
| uppermost(adjective, excellent, lead, big, important) | |
| crucial(adjective, big, important, significant, original) | |
| greatest(adjective, top, excellent, superior, important) | |
| sovereign(adjective, excellent, outstanding, head, prominent) | |
| momentous(adjective, superior, big, unusual, important) | |
| number one(expression, adjective, order, lead, heavy) | |
| overruling(adjective, importance, serious, essential, basic) | |
| preeminent(adjective, order, top, excellent, superior) | |
| significant(adjective, superior, big, unusual, important) | |
| controlling(adjective, outstanding, essential, prominent, prime) | |
| focal(adjective, important, significant, key) | |
| grand(adjective, lead, fine, important, head) |
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| APA | Smart Define. (2016). primary thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/primary/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "primary thesaurus" https://smartdefine.org/primary/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, primary thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/primary/thesaurus/synonyms>. |
| MLA | Smart Define. "primary thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/primary/thesaurus/synonyms> |