IPA: /mælˈfiːzəns/
KK: /mælˈfiːzəns/
Improper or illegal behavior, particularly by someone in a position of authority or trust.
The mayor was accused of malfeasance after misusing public funds.
Malfeasance is formed from "mal-" (meaning bad or evil) and "feasance" (from the Latin "facere", meaning to do or to make). The term refers to the act of doing something bad or illegal, particularly in a position of authority.
Think of 'mal-' meaning bad and 'feasance' relating to doing something. This helps you remember that malfeasance refers to doing something bad or illegal.