Knock out Meaning in English
expression
Definition
To make someone unconscious by hitting them hard, often used in sports like boxing; it can also mean to make someone extremely tired, or to eliminate something or someone from a competition.
Usage & Nuances
Mainly informal. Very common in boxing or sports ('knock out an opponent'). Also used figuratively: 'That medicine knocked me out' (made me very sleepy); 'They got knocked out in the first round' (eliminated). Not to be confused with 'knock on' (to strike a door).
Example Sentences
The boxer managed to knock out his opponent in the second round.
basic
That cold medicine really knocked out my headache.
basic
They were knocked out of the tournament in the first round.
basic
That workout really knocked me out—I need a nap now.
natural
He was so tired that he fell on the couch and was knocked out instantly.
natural
Our team got knocked out in the semifinals, but we played well.
natural