verb manage badly or incompetently.
— synonyms: mismanage, mishandle
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
Examples
“The student was threatened with a £2000 fine and banned from using the university's computing resources for two weeks due to gross misconduct on the Internet.”