Definition of propriety noun from the Oxford Advanced American Dictionary

     

    propriety

     noun
    noun
    NAmE//prəˈpraɪət̮i//
     
    (formal)
     
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  1. 1[uncountable] moral and social behavior that is considered to be correct and acceptable Nobody questioned the propriety of her being there alone. opposite impropriety
  2. 2the proprieties [plural] the rules of correct behavior synonym etiquette They were careful to observe the proprieties. The company had acted in accordance with all legal proprieties.
See the Oxford Advanced Learner's Dictionary entry: propriety