polite behaviour that is appropriate in a social situation synonym propriety礼貌得体;端庄稳重 He is not known for his sense of decorum. 他并不以高雅著称。 The celebrations were carried off with style and decorum. 庆祝活动以高雅的方式进行。
Word Originmid 16th cent. (as a literary term, denoting suitability of style): from Latin, neuter of the adjective decorus ‘seemly’.