English Reference
noun

malpractice

n.
US /mæɫˈpɹæktəs/ UK /mˌælpɹˈæktɪs/ mal·prac·tice UK spelling malpractices

  1. 01 C1 Advanced FormalTechnical Medicine

    when a doctor or nurse makes a serious mistake that hurts a patient.

    the improper, illegal, or negligent professional activity or treatment by a medical practitioner.

    Simple

    The surgeon was sued for malpractice after he operated on the wrong leg.

    In context

    The hospital faced a massive malpractice suit following allegations that the surgical team had ignored standard safety protocols during the procedure.

    Usage

    Often used in the phrase 'medical malpractice'.

  2. 02 C1 Advanced FormalTechnical Law

    illegal or dishonest behavior by someone in a position of power, like a lawyer or official.

    improper or unethical conduct by a professional or official person, often involving a breach of trust or duty.

    Simple

    The lawyer was accused of legal malpractice for losing his client's money.

    In context

    The regulatory body investigated the firm for administrative malpractice after several million dollars went missing from the pension fund.

The latter suspicion has, it is a great relief to hear, been allayed by reviews of his work that found no evidence of malpractice.

The Guardian· 13 Aug 2026

For Arday, the accusations are potentially ruinous – plagiarism is as serious as it gets for academic malpractice and the professor has consistently claimed he has done nothing wrong.

The Guardian· 1 Aug 2026

From mal- + practice.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Level C1 · Advanced
Frequency Frequent
Updated