4
meet(adjective, inadequate, unfit, fitting)
4
moral(adjective, right, reasonable)
4
respectable(adjective, insufficient)
4
timely
3
adequate
3
apposite
3
becoming
3
comely
3
congruous
3
convenient
3
decorous
3
due(adjective, appropriate, proper, immoral, settled)
3
formal(adjective, right, reasonable)
3
ok(adjective, right, reasonable)
3
opportune
3
prim
3
relatable(adjective, useless, unfit)
3
relevant(adjective, insignificant, unrelated)
3
seasonable
3
seemly
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APASmart Define. (2016). improper thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/improper/thesaurus/antonyms
ChicagoSmart Define. 2016. "improper thesaurus" https://smartdefine.org/improper/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2016, improper thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/improper/thesaurus/antonyms>.
MLASmart Define. "improper thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/improper/thesaurus/antonyms>