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thorough - definition and synonyms


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adjective thorough pronunciation in American English /ˈθʌroʊ/
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  1. 1
    including everything that is possible or necessary
    The key to a good interview is thorough preparation.
    a thorough investigation/examination/search: a thorough and painstaking investigation by the police
    a thorough understanding/knowledge: She has a thorough understanding of the business.
    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.
    The project was a thorough disaster.

derived word


noun [uncountable]


a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

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an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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