what is rules decorum mean
Decorum is proper and polite behavior. If you let out a big belch at a fancy dinner party, you're not showing much decorum. This noun is from Latin decÅrus proper, becoming, handsome, from dÃ©cor beauty, grace, which is also the source of English dÃ©cor. The corresponding adjective is decorous, meaning well-behaved in a particular situation.. Both decorum and decorous are often used to describe behavior in a classroom or courtroom.