What term describes performing a required task in an unacceptable manner?

The term that describes performing a required task in an unacceptable manner is misfeasance. This refers to the improper execution of an act that one is obligated to perform. In a police supervision context, if an officer carries out their duties but does so in a way that leads to a failure in following proper protocols or procedures, that would be considered misfeasance. It highlights issues of negligence or incompetence in carrying out required functions.

This term is distinct from others like malfeasance and nonfeasance. Malfeasance relates to engaging in wrongful or illegal acts while performing a task, while nonfeasance refers to the failure to perform an act that one is obligated to perform at all. A felony, on the other hand, is a serious crime, and does not describe the manner in which a task is performed. Thus, misfeasance specifically captures the essence of performing a required task poorly or improperly.