knock out
knock
nɑ:k
naak
out
aʊt
awt
British pronunciation
/nˈɒk ˈaʊt/

Definition & Meaning of "knock out"in English

to knock out
[phrase form: knock]
01

to make someone or something unconscious

Transitive: to knock out sb/sth
to knock out definition and meaning
example
Examples
The anesthesia will knock you out before the surgery.
1.1

to defeat an opponent in boxing by making them fall unconscious or unable to get up

Transitive: to knock out an opponent
example
Examples
The boxer delivered a powerful punch that knocked his opponent out in the third round.
02

to defeat someone or a group decisively in a competition

Transitive: to knock out a competitor
example
Examples
The underdog team managed to knock out the reigning champions in the tournament.
03

to forcefully destroy or break something

Transitive: to knock out sth
example
Examples
The strong winds knocked out power lines all over the neighborhood.
04

to empty, typically referring to the removal of tobacco from a container

Transitive: to knock out tobacco or ash
example
Examples
She needed to knock out the old tobacco from the cigar before lighting it.
05

to amaze someone to the point where they are filled with admiration or wonder

Transitive: to knock out sb
example
Examples
The breathtaking view from the mountaintop knocked me out.
06

to finish a task, often quickly and efficiently

Transitive: to knock out a task
example
Examples
We need to knock out this report by the end of the day.
07

to convey a message by making specific knocking sounds or patterns

Transitive: to knock out a message
example
Examples
They would knock out a pattern to let their friends know they were outside.
08

to cause someone to fall asleep

Transitive: to knock out sb
example
Examples
The sleeping pills will knock me out in no time.
09

to remove something, often swiftly and completely

Transitive: to knock out sth
example
Examples
The new pest control method effectively knocked out the infestation of insects in the house.
to knock oneself out
to knock oneself out
01

to exert a great deal of effort or energy

example
Examples
I knocked myself out to get the job done on time.
knock yourself out
knock yourself out
01

used to say that someone can do as they please

Dialectamerican flagAmerican
knock yourself out definition and meaning
IdiomIdiom
InformalInformal

What is the origin of the idiom "knock yourself out" and when to use it?

The origin of the idiom "knock yourself out"is not well-documented, but it has been in common use for many years as a friendly way to grant permission or encouragement. It likely developed as a figurative way to encourage someone to enjoy an activity to the fullest without worrying about restrictions or limitations. This phrase is now commonly used to grant permission or express encouragement in a friendly and informal manner.

example
Examples
You want to have some more cake? Knock yourself out; there's plenty left.
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