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English definition of “improper”

improper

adjective     /ɪmˈprɒpər/ formal
not correct , suitable , honest , or acceptable : improper conduct DishonestManners and levels of formalityPolite and respectfulRude and cheekyRelating to sex and sexual desire
improperly adverb The court ruled that he had acted improperly.
(Definition of improper adjective from the Cambridge Learner's Dictionary © Cambridge University Press)

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