Did you know?

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

knockout - 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.

noun [countable]     knockout pronunciation in British English
Word Forms
  1. 1
    a hit that knocks a boxer down, so that they cannot get up
    1. a.
      a boxing match that is won when one person cannot get up after being hit

      a knockout victory

  2. 2
    informal someone or something that is extremely attractive or impressive
  3. 3
    British a competition in which the player or team that loses a game does not take part in later games

Open Dictionary

snap election

a general election … that is called earlier than expected

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