mis ‧ con ‧ duct /ˌmɪsˈkɒndʌkt $ -ˈkɑːn-/ BrE AmE noun [uncountable]
formal bad or dishonest behaviour by someone in a position of authority or trust:
a doctor who has been accused of professional misconduct
He was fired for serious misconduct.
She was found guilty of gross misconduct (=very serious misconduct) .