This is the intentional performance of an official act or use of one's official powers to achieve an end which is circumstantially illegal, harmful and/or unjustified.

Question

Quizplus · Accepted Answer

Malfeasance is the intentional misuse of one's official powers, which is illegal, harmful, and unjustified, while nonfeasance is the failure to perform an official duty, and misfeasance is the improper performance of an official duty.

This Is the Intentional Performance of an Official Act or Use