Nouns

(n)misconductbad or dishonest management by persons supposed to act on another's behalf
(n)wrongdoing, wrongful conduct, misconduct, actus reusactivity that transgresses moral or civil law“he denied any wrongdoing”

Verbs

(v)misbehave, misconduct, misdemeanbehave badly“The children misbehaved all morning”
(v)mismanage, mishandle, misconductmanage badly or incompetently“The funds were mismanaged”