improper
US /ɪmˈprɑː.pɚ/
UK /ɪmˈprɑː.pɚ/
1.
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