Did you know?

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

extreme - 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.

adjective     extreme pronunciation in American English
  1. 1
    [only before noun] very great in degree

    Use extreme caution when driving in wet conditions.

    Will the clothing give protection against extreme cold?

  2. 2
    considered unreasonable by most people

    an extreme liberal

    Their demands were seen as being too extreme.

    It seemed a little extreme to call the police.

  3. 3
    very unusual
    an extreme case:

    In extreme cases, your membership may be canceled.

    an extreme example (of something):

    This city’s problems offer an extreme example of the difficulties faced by the country as a whole.

    1. a.
      much more severe or serious than usual

      The police were accused of using extreme violence against the protesters.

  4. 4
    [only before noun] farthest away
    the extreme end/edge/tip:

    The wooden buildings are situated at the extreme tip of the island.

    the extreme left/right/north/south:

    The minister is on the extreme left of the picture.



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