70 entries under primary topic. ×
| matchless(adjective, bad, tough, top, perfect) | |
| momentous(adjective, feature, state, characteristic, good) | |
| significant(adjective, good, important, powerful, rank) | |
| fundamental(adjective, important, head, significant, beginning) | |
| prevailing(adjective, attractive, suitable, prominent, prime) | |
| topmost(adjective, top, excellent, lead, fine) | |
| basic(adjective, important, head, significant, beginning) | |
| incomparable(adjective, bad, tough, top, solid) | |
| big(adjective, important, famous, familiar, large) | |
| inaugural(adjective, order, heavy, important, head) | |
| initiatory(adjective, beginning, opening, original, first) | |
| unparalleled(adjective, bad, tough, top, perfect) | |
| consequential(adjective, good, important, powerful, significant) | |
| most important(expression, adjective, idiom, order, top) | |
| number one(expression, adjective, order, quality, top) | |
| pioneer(adjective, head, beginning, original, prime) | |
| primo(adjective, order, quality, bad, tough) | |
| transcendent(adjective, bad, tough, top, perfect) | |
| unequaled(adjective, bad, tough, top, perfect) | |
| vital(adjective, top, importance, important, serious) |
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| APA | Smart Define. (2015). leading thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/leading/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "leading thesaurus" https://smartdefine.org/leading/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2015, leading thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/leading/thesaurus/synonyms>. |
| MLA | Smart Define. "leading thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/leading/thesaurus/synonyms> |