92 entries under primary topic. ×

11
predominant(adjective, importance, outstanding, essential, prominent)
11
superior(adjective, good, quality, great, top)
10
champion(noun, adjective, good, bad, great)
10
primal(adjective, beginning, primeval)
10
uppermost(adjective, excellent, rank, post, status)
9
arch(adjective, position, top, superior, importance)
9
essential(adjective, important, significant, original, prominent)
8
capital(noun, adjective, good, quality, bad)
8
highest(adjective, quality, bad, tough, top)
8
initiative(adjective, beginning, opening, original)
8
major(adjective, top, superior, unusual, important)
7
former(adjective, order, time, original, past)
7
pioneer(adjective, pronoun, order, start, original)
7
sovereign(adjective, excellent, superior, importance, outstanding)
6
antecedent(adjective, order, original, old)
6
preeminent(adjective, bad, tough, top, excellent)
5
number one(noun, verb, expression, adjective, phrasal verb)
5
headmost(adjective, order, top, lead, important)
5
previous(past, advanced, forward, up)
5
topmost(adjective, top, excellent, lead, fine)
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APASmart Define. (2016). first thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/first/thesaurus/synonyms
ChicagoSmart Define. 2016. "first thesaurus" https://smartdefine.org/first/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, first thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/first/thesaurus/synonyms>.
MLASmart Define. "first thesaurus" 31 March 2016. Web. 21 September 2026. <https://smartdefine.org/first/thesaurus/synonyms>