Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “knock sb out”

See all translations

knock sb out

verb uk phrasal verb with knock   /nɒk/ us    /nɑːk/

(MAKE UNCONSCIOUS)

B2 to hit someone so that they become unconscious: His opponent knocked him out with one punch.
See also

(MAKE SLEEP)

If a drug or alcohol knocks you out, it makes you go to sleep: The sleeping tablets knocked him out for 18 hours.

(DEFEAT)

B2 to defeat a person or a team in a competition so that they can no longer take part in it: The champion was unexpectedly knocked out (of the tournament) in the first round.

(IMPRESS)

old-fashioned slang to cause enjoyment or admiration in someone: We were all really knocked out by the film.
(Definition of knock sb out from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of knock sb out?
Add Cambridge dictionaries to your browser to your website

“knock sb out” in English

    Definitions of “knock sb out” in other dictionaries

    Word of the Day

    guru

    a religious leader or teacher in the Hindu or Sikh religion

    Word of the Day

    The way we move (Verbs for walking and running)

    by Kate Woodford,
    March 25, 2015
    ​​​ This week we’re looking at interesting ways to describe the way that people move. Most of the verbs that we’ll be considering describe how fast or slow people move. Others describe the attitude or state of mind of the person walking or running. Some describe both. Starting with verbs for walking slowly,

    Read More 

    crossfit noun

    March 23, 2015
    high-intensity strength training Two women in strappy dresses discussed how much weight they could snatch

    Read More