formal
: correct or proper behavior that shows respect and good manners
He has no sense of decorum.
Court decorum [=proper behavior in a courtroom] requires that all parties address the judge as "Your Honor."
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“Decorum.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/decorum. Accessed 12 Jul. 2026.
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