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English definition of “improper”

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improper

adjective uk   /ɪmˈprɒp.ər/ us    /-ˈprɑː.pɚ/

improper adjective (DISHONEST)

formal dishonest and against a law or a rule: The governor has denied making improper use of state money.

improper adjective (WRONG)

formal unsuitable or not correct for a particular use or occasion: improper prescription of medicines Is it considered improper to wear such a short skirt to a formal occasion?

improper adjective (RUDE)

related to sex in a way that is rude or socially unacceptable: I trust you're not making improper suggestions to my husband!
improperly
adverb uk   /-li/ formal us  
(Definition of improper from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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