29
primary(adjective, lead, importance, important, head)
26
principal(adjective, top, lead, importance, important)
26
chief(adjective, quality, top, lead, superior)
25
main(adjective, quality, top, lead, superior)
22
prime(adjective, quality, lead, figure, superior)
20
essential(adjective, importance, important, significant, original)
20
fundamental(adjective, important, head, significant, beginning)
18
leading(adjective, quality, tough, top, superior)
17
central(adjective, lead, important, head, significant)
17
key(adjective, lead, important, head, significant)
16
foremost(adjective, lead, importance, important, head)
16
paramount(adjective, quality, tough, top, perfect)
14
first(adjective, order, quality, top, superior)
13
important(adjective, significant, original, essential, critical)
13
carmine(noun, adjective, colour, glowing, rose)
12
basic(adjective, important, head, significant, beginning)
12
vital(adjective, importance, important, significant, original)
10
capital(noun, adjective, quality, top, lead)
10
primal(adjective, lead, head, master, boss)
10
ruby(noun, adjective, colour, glowing, rose)
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APASmart Define. (2015). Cardinal thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/cardinal/thesaurus/synonyms
ChicagoSmart Define. 2015. "Cardinal thesaurus" https://smartdefine.org/cardinal/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, Cardinal thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/cardinal/thesaurus/synonyms>.
MLASmart Define. "Cardinal thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/cardinal/thesaurus/synonyms>