knock sb out
— phrasal verb with knock uk/nɒk/us/nɑːk/verb
(MAKE UNCONSCIOUS)
B2 to hit someone so that they become unconscious:
His opponent knocked him out with one punch.
See also
knockout
Thesaurus: synonyms and related words
Losing consciousness
- black out
- blackout
- collapse
- coma
- concuss
- concussed
- concussion
- conk out
- go out like a light idiom
- insensible
- knock
- oblivion
- out
- pass
- see
- see stars idiom
- senseless
- stupor
- swoon
- syncope
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(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.
Thesaurus: synonyms and related words
Medicines & drugs: administering drugs & medicines
- anaesthesiology
- anaesthetist
- anesthesiology
- bolus
- dispense
- doping
- dose
- drug
- ED
- inject
- knock
- overprescribe
- PCA
- prescribe
- put
- put sb on sth
- sedate
- sedation
- self-medicate
- tranquillize
(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.
Thesaurus: synonyms and related words
Winning, losing & scoring in sport
- against the run of play idiom
- close-run
- do the double over sb idiom
- drubbing
- game changer
- game-changing
- hold
- lead 1
- pip
- pummel
- retire
- run away with sth
- sink
- square
- strike gold idiom
- varsity
- walkaway
- walkover
- win
- won
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(IMPRESS)
old-fashioned slang to cause enjoyment or admiration in someone:
We were all really knocked out by the film.
Thesaurus: synonyms and related words
Causing pleasure
- agreeable
- all things to all people idiom
- attractive
- banging
- be better than sex idiom
- brighten
- do sb the world of good idiom
- dreamy
- ducky
- enchant
- engaging
- jolly
- keep on the right side of sb idiom
- keep sb sweet idiom
- knock
- leafy
- lighten
- lovely
- quench
- tickle
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