Misfeasance (noun)

The performance of a lawful action in an illegal or improper manner.

Origin:

Derived from the old french word "malfaisance" which means "wrongdoing" or "misconduct". the term refers to the performance of a lawful action in an illegal or improper manner.

Examples:

1. The judge found the police officer guilty of misfeasance for using excessive force during the arrest.
2. The board of directors was accused of misfeasance for approving the illegal merger.
3. The misfeasance of the public official led to the loss of millions of dollars.
4. The lawyer argued that the misfeasance was a result of negligence, not malice.
5. The misfeasance of the previous manager was discovered during the internal audit.