Did you know?

Click any word in a definition or example to find the entry for that word

clean - definition and synonyms

What are red words?

90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.

Thesaurus diagram

The thesaurus of synonyms and related words is fully integrated into the dictionary. Click on the thesaurus category heading under the button in an entry to see the synonyms and related words for that meaning.

verb     clean pronunciation in British English
Word Forms
present tense
present participlecleaning
past tensecleaned
past participlecleaned
  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.

    1. a.
      [intransitive/transitive] to clean houses or buildings as a job
      clean for:

      The woman who cleans for me has got flu.

      Synonyms and related words
  3. 3
    [transitive] to remove the inside parts of an animal, bird, or fish before cooking it
  • Facebook
  • Twitter


a lifestyle focussing on simple pleasures such as comfort and cosiness in the home, and spending time with friends and family

BuzzWord Article

Open Dictionary


a form of location that involves the underwater detonation of a bomb which causes sound waves that are picked up by ships

add a word


A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog
Macmillan learn live love play