Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “knock sb out”

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

    look on the bright side

    to find good things in a bad situation

    Word of the Day

    The language of work

    by Kate Woodford,
    October 15, 2014
    Most of us talk about our jobs. We tell our family and friends interesting or funny things that have happened in the workplace (=room where we do our job), we describe – and sometimes complain about – our bosses and colleagues and when we meet someone for the first time, we tell

    Read More 

    life tracking noun

    October 20, 2014
    the use of one or more devices or apps to monitor health, exercise, how time is spent, etc.

    Read More