improper

improper
adjective
  1. not in accordance with accepted rules or standards, especially of morality or honesty
    (尤指道德或诚信方面)不合标准的;不得当的,不得体的,不恰当的
    he was accused of improper behaviour in his business dealings.
    他被指责在交易中有不恰当行为。
    it is improper to end a sentence with a preposition.
    以介词结束句子是不得当的。
    ■lacking in modesty or decency
    不谦虚的;不庄重的,不体面的
    it was thought improper for elderly women to wear bright colours.
    人们认为老年妇女穿着艳丽有失庄重。
派生
improperly
adverb
语源
  1. late Middle English: from French impropre or Latin improprius, from in- 'not' + proprius 'one's own, proper'
英语宝典
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