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.

adjective spontaneous pronunciation in British English /spɒnˈteɪniəs/

Related meanings

  1. happening in a natural way without being planned or thought about

    spontaneous applause/cheers

    He was suddenly filled with tears of spontaneous emotion.

    1. a.
      used in a positive way about someone who often behaves in a natural and friendly way, without worrying about what they say or do

      Ellie’s one of the most spontaneous, fun-loving people I know.

    2. b.
      science used about chemical or biological changes or processes that happen suddenly in a natural way

      spontaneous wildfires

      spontaneous contractions of the muscles in the oesophagus

derived words


… 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