misconduct

(noun) bad or dishonest management by persons supposed to act on another's behalf.

(noun) activity that transgresses moral or civil law. Synonyms: wrongdoing, wrongful conduct, actus reus. Example: "He denied any wrongdoing."

(verb) behave badly. Synonyms: misbehave, misdemean. Example: "The children misbehaved all morning."

(verb) manage badly or incompetently. Synonyms: mismanage, mishandle. Example: "The funds were mismanaged."