malpractice
1. [ noun ] (law) professional wrongdoing that results in injury or damage
Examples:

"the widow sued his surgeon for malpractice"

Related terms: wrongdoing
2. [ noun ] (law) a wrongful act that the actor had no right to do; improper professional conduct
Synonyms: malfeasance
Examples:

"he charged them with electoral malpractices"

Related terms: wrongdoing