3
outstanding(adjective, important, significant, essential, prominent)
3
preponderant(adjective, supreme, dominant, utmost, governing)
3
prevailing(adjective, outstanding, prominent, prime, key)
3
primate(noun, religion, person, title, archbishop)
3
primordial(adjective, important, head, significant, beginning)
3
rector(noun, clergy)
3
redbird(noun, bird)
3
requisite(adjective, important, significant, original, essential)
3
rufous(adjective, colour)
3
sovereign(outstanding, original, best, prominent, prime)
3
special(adjective, key, chief, foremost)
3
stellar(adjective, tough, top, superior, heavy)
3
vicar(noun, clergy)
2
all-absorbing
2
best(adjective, lead, head, master, boss)
2
bottom-line(adjective, important, significant, original, essential)
2
burgundy(noun, adjective, colour, glowing, makeup)
2
cardinal direction(adjective, point, direction, compass)
2
chestnut(noun, adjective, colour, glowing, makeup)
2
constitutional(adjective, important, significant, original, basic)
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APASmart Define. (2015). cardinal thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/cardinal/thesaurus/synonyms
ChicagoSmart Define. 2015. "cardinal thesaurus" https://smartdefine.org/cardinal/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, cardinal thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/cardinal/thesaurus/synonyms>.
MLASmart Define. "cardinal thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/cardinal/thesaurus/synonyms>