1
disreputable
1
easygoing
1
errant
1
filthy
1
fresh
1
gauche
1
grungy
1
ill-becoming
1
ill-fitting
1
illegal
1
illegitimate
1
illicit(adjective, legal, forbidden)
1
immoral
1
imperfect
1
imprecise(adjective, bad)
1
inadvisable
1
incompetent
1
inconvenient
1
ineligible
1
inexpert
10 years ago|7.9k views|share |citing 
APASmart Define. (2016). proper thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/proper/thesaurus/antonyms
ChicagoSmart Define. 2016. "proper thesaurus" https://smartdefine.org/proper/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2016, proper thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/proper/thesaurus/antonyms>.
MLASmart Define. "proper thesaurus" 31 March 2016. Web. 24 September 2026. <https://smartdefine.org/proper/thesaurus/antonyms>