thorough - definition and synonyms


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  1. 1
    including everything that is possible or necessary

    The key to a good interview is thorough preparation.

    a thorough understanding/knowledge:

    She has a thorough understanding of the business.

    a thorough investigation/examination/search:

    a thorough and painstaking investigation by the police

    1. a.
      someone who is thorough does everything that they should and leaves nothing out

      The doctor was very thorough and asked lots of questions.

  2. 2
    [only before noun] complete: used for emphasizing how bad someone or something is

    It’s all a thorough nuisance.

derived word


noun [uncountable]