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 function pronunciation in British English /ˈfʌŋkʃ(ə)n/
Word Forms
  1. 1
    [countable/uncountable] the job that something is designed to do
    The function of advertising is to create a unique image for your company.
    perform a function: All the backup systems performed their function flawlessly.
    1. a.
      [countable] someones job or particular responsibility
      a manager’s supervisory functions
  2. 2
    [countable/uncountable] something that happens in your body, or something that a part of your body does
    He has no muscle function in his upper arms.
    Free radicals have the ability to disrupt bodily functions.
  3. 3
    [countable] a social event such as a party, especially one for a large number of people
    I sometimes attend official functions with my wife.
  4. 4
    [countable] computing the purpose of a computer program or piece of computer equipment
    accounting/spreadsheet functions



used to describe foods which don't contain ingredients such as wheat, dairy products etc …

BuzzWord Article

Open Dictionary

red market

the buying and selling of human organs

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