be improper to do sth
It is improper to whisper during a meeting.
开会时窃窃私语是不适当的。
不道德的；不雅的；不合法的；不正确的；错误的；（数学）假分数的；（复随机变量）与其共轭相关的；不适合需要或情况的；不恰当的；不合适的。
Not suitable or appropriate for a particular purpose or situation.
不适合需要或情况的；不恰当的；不合适的。
Unsuitable to needs or circumstances; inappropriate; inapt.
不合适的；不正确的；不恰当的
not suitable or right or appropriate
不符合传统道德或礼貌的；不雅的或不端庄的。
Not in keeping with conventional mores or good manners; indecent or immodest.
不符合法律、道德或社会习俗的
not conforming to legality, moral law, or social convention
不符合事实的；不准确的或错误的。
Not according to facts; inaccurate or erroneous.
不适合某目的或场合的
not appropriate for a purpose or occasion
与既定事实不符的；不正确的。
Not consistent with established facts; incorrect.
命名不当的。
Not properly named; See, for example, improper fraction.
(指复随机变量)与其共轭相关的。
Of a complex random variable, correlated with its conjugate.
It is considered improper to wear shorts in a formal setting.
在正式场合穿短裤被认为是不适当的。
用法提示：improper作形容词，表示'不得体'，用于主语为不定式短语的句式。
AI contextual example
Calling elders by their first names is improper.
对长辈直呼其名是不礼貌的。
用法提示：improper作表语形容词，描述行为不符合礼节。
AI contextual example
His rude comments at the meeting were improper.
他在会议上粗鲁的评论是不妥的。
用法提示：improper作表语，描述言论不恰当。
AI contextual example
It is improper to whisper during a meeting.
开会时窃窃私语是不适当的。
Such language is improper for a child.
这种语言对孩子来说不得体。
The doctor was accused of improper conduct.
该医生被指控行为不当。
Many consider it improper to arrive late.
许多人认为迟到是不合适的。
最普通，强调与场合或条件不符。
强调不匹配或不符合特定要求。
侧重违反社会礼仪或得体标准。
正式用语，指行为或外表不端庄、不合礼节。
grammar · medium
易错句子The machine was operating improper.
正确表达The machine was operating improperly.
动词 'operating' 需要副词修饰，而 'improper' 是形容词，应改为副词 'improperly'。
grammar · medium
易错句子It is unproper to talk loudly in the library.
正确表达It is improper to talk loudly in the library.
'unproper' 不是标准英语词汇，正确形式应为 'improper'，表示‘不适当的’。
与 improper 相对，指符合标准或礼仪。
与 improper 相对，指适合特定场合或目的。
与 improper 相对，指满足条件或要求。
与 improper 相对，指与情境相称。
当 improper 表示“错误的”时，correct 为其反义词。
improper多指违反社会或道德标准，inappropriate则更强调不适合特定场合或目的
indecent指违反性道德或色情方面的不当，程度重于improper
unbecoming指行为或着装与身份、地位或场合不符，比improper更侧重体面
不当行为
The employee was fired for improper conduct.
该员工因不当行为被解雇。
不得体的举止
Such improper behavior will not be tolerated.
这种不得体的举止是不会被容忍的。
不当使用
Improper use of the equipment may cause injury.
不当使用设备可能导致受伤。
不恰当的着装
Guests in improper attire will be refused entry.
着装不当的客人将被拒绝入场。
不当处置
Improper disposal of waste harms the environment.
废物处置不当会危害环境。
im- (not) + proper (suitable)
im- (not) + possible (possible)
proper (root)
与improper常一起讨论行为是否得体
improper常形容conduct不当
improper行为常违反职业操守
improper行为常违背道德规范
improper行为常不合礼节
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.