decorum

decorum
[dɪˈkɔːrəm]
noun
  1. [mass noun]behaviour in keeping with good taste and propriety
    礼貌;正派得体
    ■etiquette
    礼仪
    he had no idea of funeral decorum.
    他对殡葬的礼仪一无所知。
    ■[count noun](一般作 decorums)(archaic)a particular requirement of good taste and propriety
    (古)礼仪要求
    ■(archaic)suitability to the requirements of a person, rank, or occasion
    (古)得体,合宜,相称
语源
  1. mid 16th cent. (as a literary term, denoting suitability of style): from Latin, neuter of the adjective decorus 'seemly'
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