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clean - definition and synonyms


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verb clean pronunciation in British English /kliːn/
Word Forms
present tense
present participlecleaning
past tensecleaned
past participlecleaned
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  1. 1
    [transitive] to remove the dirt from something
    Paul is cleaning his car.
    Do you want the windows cleaned?
    You should clean your teeth twice a day.
    clean something off something: I cleaned the mud off my boots.
  2. 2
    [intransitive/transitive] to remove the dirt and dust in a house or other building
    We’ve cleaned the house from top to bottom.
    I spent the morning cleaning.
    1. a.
      [intransitive/transitive] to clean houses or buildings as a job
      His mother supported the family by cleaning offices.
      clean for: The woman who cleans for me has got flu.
      Synonyms and related words


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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