impropriety
🇺🇸
/ˌɪmprəˈpraɪəti/
🇬🇧
/ˌɪmprəˈpraɪəti/
Something that is not right or not suitable, especially in a professional or moral way.
The teacher was shocked by the student's behavior, which was a clear case of impropriety.
老師對學生的行为感到震驚,這是一個明顯的不當行為案例。