n. 1. Wrong conduct; bad behavior; mismanagement. Addison. [ 1913 Webster ]
2. Unlawful or unethical conduct by a person holding a public office or having a position of responsibility in the administration of justice; malfeasance; as, discussing the case out of court during a trial is misconduct by a juror; especially, misuse of office by an elected or appointed government official, also called misconduct in office. [ PJC ]