unacceptable or bad behaviour by someone in a position of authority or responsibility

The psychiatrist was found guilty of gross (= unacceptable) professional misconduct. 这个精神病医生被判定为严重失职。

The former priest denied allegations of sexual misconduct. 这位前牧师否认有不端性行为的指控。

the fact that the activities of an organization are badly managed

financial misconduct 财务管理不善

to manage the activities of an organization badly

The aid programme was misconducted, resulting in large quantities of food failing to reach the famine victims. 援助项目管理不善，导致大量食物没有送达饥民。