misfeasance

Example:His report on negligence showcases serious oversight and mishandling during the project.

Definition:A failure to exercise the proper degree of care and diligence in performing one's duties, often resulting in harm or injury.

Example:The judge found the doctor guilty of dereliction of duty for misdiagnosing the patient.

Definition:A failure to fulfill one's obligations, especially through a lack of effort or care, which results in harm to others or a breach of statutory requirements.