7
corking(adjective, great, perfect, job, super)
7
important(adjective, informal, outstanding, worthy, notable)
7
matchless(adjective, bad, tough, top, excellent)
7
nifty(adjective, cool, great, excellent, fine)
7
prize(adjective, excellent, informal, superior, job)
7
slick(adjective, great, perfect, job, super)
7
stellar(quality, superior, heavy, job, best)
7
supreme(adjective, good, bad, cool, great)
7
topflight(adjective, good, excellent, informal, superior)
6
finest(adjective, good, quality, bad, great)
6
hot(quality, superior, heavy, job, best)
6
jim-dandy(job, very best kind)
6
mean(cool, great, job, refined, very best kind)
6
number one(expression, adjective, good, quality, bad)
6
out-of-sight(adjective, bad, tough, top, perfect)
6
peachy(adjective, cool, great, excellent, superb)
6
primo(adjective, quality, bad, tough, top)
6
top-flight(adjective, job, head, original, best)
6
top-hole(adjective, great, perfect, super, first)
5
ace(adjective, good, bad, great, sound)
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APASmart Define. (2016). first-class thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/first-class/thesaurus/synonyms
ChicagoSmart Define. 2016. "first-class thesaurus" https://smartdefine.org/first-class/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, first-class thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/first-class/thesaurus/synonyms>.
MLASmart Define. "first-class thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/first-class/thesaurus/synonyms>