Did you know?

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


 - definitions and thesaurus

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.



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.

noun [countable/uncountable] sky pronunciation in British English /skaɪ/
Word Forms
  1. the space above the earth that you see when you look up into the air

    At noon the sun is directly above us in the sky.

    Air pollution is clearly visible in the skies over the city.

    a clear blue sky

    the night/summer/northern sky (=how the sky looks at a particular time, season, or place):

    The night sky was filled with stars.

    a patch/strip of sky (=a small area of the sky):

    a patch of blue sky among the clouds

    1. a.
      [usually plural] used for talking about the weather
      clear/cloudy skies:

      Tomorrow we expect clear skies in the morning, with rain in the afternoon.



… a teaching method in which groups of children learn independently using a computer linked to the internet

BuzzWord Article

Open Dictionary


a derogatory word used for referring to people in the banking and investment industry who are thought of as taking serious risks in order to increase their own earnings …

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