5
malapropos(adjective, adverb)
4
inappropriate(adjective, unsuitable)
4
irrelevant
4
unsuitable
2
impertinent
2
inapplicable
2
inapposite
2
inapt
1
extraneous
1
improper
1
inadmissible
1
inappropriately
1
incongruous
1
incorrect
1
indecorous
1
inept
1
infelicitous
1
irrelative
1
irrelevantly
1
minor
10 years ago|1.4k views|share |citing 
APASmart Define. (2016). apropos thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/apropos/thesaurus/antonyms
ChicagoSmart Define. 2016. "apropos thesaurus" https://smartdefine.org/apropos/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2016, apropos thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/apropos/thesaurus/antonyms>.
MLASmart Define. "apropos thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/apropos/thesaurus/antonyms>