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Adjective: improper  im'pró-pu(r)
  1. Not suitable, right or appropriate
    "slightly improper to dine alone with a married man"; "improper medication"; "improper attire for the golf course"
     
  2. Not conforming to legality, moral law, or social convention
    "improper banking practices";
    - unconventional, unlawful
     
  3. Not appropriate for a purpose or occasion
    "said all the improper things";
    - wrong

See also: correctitude, inappropriate, incorrect, indecent, indecorous, indelicate, irregular, out-of-the-way, properness, propriety, unbecoming, uncomely, unfit, unseemly, untoward, wrong

Antonym: proper

Encyclopedia: Improper