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complaint

n.
US //kəmˈpɫeɪnt// UK //kəmplˈeɪnt// com·plaint
  1. 1 expression of dissatisfaction (n.)
    B1 Intermediate

    a statement that you are unhappy or not satisfied with a situation or service.

    the act of expressing dissatisfaction or the statement itself regarding a perceived grievance.

    Example

    The customer made a formal complaint because the waiter was very rude.

    Example

    The department received a formal complaint regarding the lack of transparency in the recent promotion process.

    Usage

    Often used with the verbs 'make', 'file', or 'lodge'.

    Pitfall
    I want to make a complain about the food.
    I want to make a complaint about the food.

    Use 'complain' as a verb and 'complaint' as a noun.

  2. 2 legal accusation (n.)
    C1 Advanced Formal Technical Law

    a formal legal document that starts a case or accuses someone of a crime.

    a formal legal document that sets out the facts and legal reasons for a lawsuit or a criminal charge.

    Example

    The lawyer filed a complaint against the company for breaking the contract.

    Example

    The plaintiff's attorney drafted a civil complaint alleging breach of fiduciary duty and seeking compensatory damages.

    Usage

    In legal contexts, this is a countable noun referring to a specific document.

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  1. 3 medical illness (n.)
    B2 Upper Intermediate Formal Medicine

    an illness or a medical problem, usually one that is not very serious.

    a physical ailment or medical disorder, often used when describing symptoms to a doctor.

    Example

    He went to the doctor because of a persistent stomach complaint.

    Example

    The patient presented with a minor respiratory complaint that had persisted for several weeks despite over-the-counter treatment.

    Teacher's tip

    This is a more formal way to say 'illness' or 'problem' in a medical context.

Origin

From Middle English compleynte, from Anglo-Norman compleint, from Old French compleindre, eventually from Latin planctus (whence plaint).

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