Synonyms|623Antonyms|113|Broader|2Narrower|0Related|2.1k
9
not good
4
poor
4
subpar
4
substandard
3
inferior(adjective, importance, important, less)
3
mediocre
3
middling
3
sub-par
2
awful
2
execrable
2
good
2
lousy
2
low-grade
2
low class
2
minor
2
rotten
2
second-class
2
second-rate
2
terrible
2
unsatisfactory
For more, visit First-class on Power Thesaurus
10 years ago|1.6k views|share |citing 
APASmart Define. (2016). first-class thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/first-class/thesaurus/antonyms
ChicagoSmart Define. 2016. "first-class thesaurus" https://smartdefine.org/first-class/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2016, first-class thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/first-class/thesaurus/antonyms>.
MLASmart Define. "first-class thesaurus" 29 March 2016. Web. 21 September 2026. <https://smartdefine.org/first-class/thesaurus/antonyms>