4
unrelatable
4
unseemly(adjective, proper)
3
inapplicable(adjective, relevant)
3
inappropriate(adjective, proper, awkward, suitable, fitting)
3
inapposite
3
indecorous
3
inexpert
3
insufficient(adjective, awkward, inappropriate)
3
irrelevant(adjective, awkward, inappropriate)
3
unfit(adjective, appropriate, suited)
3
unfitting(adjective, awkward, inappropriate)
3
unqualified
3
unskilled(adjective, awkward, inappropriate)
3
useless(adjective, awkward, inappropriate)
2
disqualified
2
foul
2
graceless
2
inconvenient(adjective, awkward, inappropriate)
2
inferior
2
malapropos
11 years ago|5.1k views|share |citing 
APASmart Define. (2015). suitable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/suitable/thesaurus/antonyms
ChicagoSmart Define. 2015. "suitable thesaurus" https://smartdefine.org/suitable/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2015, suitable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/suitable/thesaurus/antonyms>.
MLASmart Define. "suitable thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/suitable/thesaurus/antonyms>