complaint - definition and synonyms


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  1. 1
    [countable/uncountable] a written or spoken statement in which someone says they are not satisfied with something
    make/file/lodge a complaint:

    I intend to make a complaint.

    complaint about:

    Customers lodged a formal complaint about the way they were treated.

    complaint against:

    An alarming number of complaints have been filed against him.

    complaint that:

    The council has received complaints that the building is not safe.

    investigate a complaint:

    All complaints are thoroughly investigated.

    uphold a complaint (=say it is reasonable):

    The Commission upheld the complaint under Article 13.

    grounds/cause for complaint:

    If they had a more caring attitude, we’d have less cause for complaint.

    1. a.
      [countable] something that someone complains about

      The main complaint was the noise.