improper
US /ɪmˈprɑː.pɚ/
UK /ɪmˈprɑː.pɚ/
1.
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not in accordance with accepted rules or standards, especially of morality or honesty.
:
•
he was accused of improper behavior in his business dealings
:
inappropriateunacceptableunsuitableunprofessionalirregularillegitimateagainst the rulesunethicalcorruptimmoraldishonestdishonorableunscrupulouscrookednot cricketindecentoff colorindelicatesuggestivenaughtyribaldearthyRabelaisiansmuttydirtyfilthyvulgarcruderudeobscenelewdpornographicblueraunchysteamynudge-nudgefruitysaucy