n.礼貌合宜
Can you cancel a date with decorum? 你能够有礼貌地取消约会吗?
I hope you will behave with decorum at the funeral. 我们希望你在葬礼上做到得体有礼。
Each had enough decorum to suspend further hostilities. 双方都还有足够的礼貌,总算暂时停止了进一步的敌对行为。