9
top(noun, adjective, advance, great, start)
8
assets(noun, property, amount, capital, wealth)
8
grand(adjective, lead, fine, important, head)
8
high(adjective, lead, rank, head, master)
8
most important(expression, adjective, idiom)
8
number one(noun, expression, adjective, order, bad)
8
preeminent(adjective, order, bad, great, tough)
8
ruler(noun, person, guide, head, master)
8
ruling(adjective, excellent, superior, important, head)
8
stellar(adjective, great, tough, top, heavy)
7
ace(noun, adjective, bad, great, tough)
7
greatest(adjective, bad, tough, top, excellent)
7
momentous(adjective, good, bad, great, excellent)
7
necessary(adjective, body, material, big, important)
7
primal(adjective, lead, head, master, boss)
7
radical(adjective, great, importance, important, significant)
6
champion(adjective, order, bad, character, tough)
6
controlling(adjective, top, superior, important, head)
6
corpus
6
crucial(adjective, great, big, important, significant)
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APASmart Define. (2016). principal thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/principal/thesaurus/synonyms
ChicagoSmart Define. 2016. "principal thesaurus" https://smartdefine.org/principal/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, principal thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/principal/thesaurus/synonyms>.
MLASmart Define. "principal thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/principal/thesaurus/synonyms>