malpractice

/ˌmælˈpræktɪs/
noun
  1. Failure of a professional person, such as a doctor or lawyer, to perform their duties correctly or ethically, often causing harm to a client or patient.
    • The lawyer faced a malpractice claim for missing the court deadline.
    • The doctor was sued for malpractice after making a serious error during surgery.
    • Medical malpractice can result in long-term health problems for patients.
  2. Any improper or negligent behavior in a job or position of responsibility.
    • Corporate malpractice can damage a company's reputation and lead to lawsuits.
    • The teacher was investigated for educational malpractice after ignoring students' needs.
    • The accountant was fired for financial malpractice involving client funds.