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English definition of “decorum”

decorum

noun [U]     /dɪˈkɔː.rəm/ US  /-ˈkɔːr.əm/ formal
behaviour that is controlled, calm, and polite: As young ladies we were expected to act/behave with proper decorum.Manners and levels of formalityPolite and respectful
(Definition of decorum noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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