Synonyms of the word

misdeed

• n. That which was done that should not have been, ranging from any sin or moral offense to various degrees…

misbehavior

• n. (US) Action or conduct that is inappropriate, improper, incorrect, or unexpected.

misbehaviour

• n. (British spelling) Alternative spelling of misbehavior.

misconduct

• n. behavior that is considered to be unacceptable.
• v. (transitive) To mismanage.
• v. (reflexive) To behave inappropriately, to misbehave.
• v. (intransitive, rare) To act improperly.

wrongdoing

• n. (uncountable) Violation of standards of behavior.
• n. (countable) An instance of doing wrong.