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clean

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adjective British English pronunciation: clean /kliːn/ 
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adjectiveclean
comparativecleaner
superlativecleanest
  1. 1
    not dirty

    Go and put on a clean shirt.

    nice clean towels

    clean and tidy:

    I like to keep the place clean and tidy.

    spotlessly clean:

    Everything in the house was spotlessly clean (=extremely clean).

    brush/scrub/sweep/wash/wipe etc something clean:

    Tom had scrubbed the floor clean.

    1. b.
      clean air or water has no dirty or dangerous substances in it

      Many refugees are living in appalling conditions, without clean water and proper sanitation.

      the clean country air

    2. c.
      clean machines and processes do not create a lot of pollution

      clean technologies

      We already have the cleanest diesel fuel in the world.

  2. 2
    not guilty of anything illegal or wrong

    an attempt by the government to project a clean image

    Why couldn't the president send somebody with a totally clean record?

    I've got a clean driving licence (=I have not committed any driving offences).

    1. a.
      clean language or humour does not offend people, especially because it does not involve sex

      It was all good clean fun.

      keep it clean (=not say anything offensive):

      Keep it clean – there are children listening.

    2. c.
      informal not carrying anything illegal

      The police stopped him, but he was clean.

    3. d.
      informal no longer using illegal drugs

      Carter's been clean for six months.

  3. 4
    clean smells, tastes, and colours are light and fresh

    The wine is clean and fresh, though with a robust flavour.

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