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Definition of decorum noun from the Oxford Advanced American Dictionary

     

    decorum

     noun
    noun
    NAmE//dɪˈkɔrəm//
     
    [uncountable] (formal)
     
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  1. 1polite behavior that is appropriate in a social situation synonym propriety
  2. 2 a sense of decorum
See the Oxford Advanced Learner's Dictionary entry: decorum