knock out
[verb]
Synonyms: exhaust, bugger, fag, frazzle, outtire, outwear, poop, prostrate, tucker, wear out

[TahlilGaran] English Synonym Dictionary ▲

knock out phrasal verb (see also knock)

1. UNCONSCIOUS knock somebody ↔ out to make someone become unconscious or go to sleep:
The champion knocked Biggs out in the seventh round.
knock yourself out
His head hit a table as he fell and he knocked himself out.
The nurse gave me some medicine which totally knocked me out. ⇒ knockout¹(1)

2. DEFEAT knock somebody/something ↔ out to defeat a person or team in a competition so that they can no longer take part:
The German team were knocked out in the first round.
knock somebody/something out of something
He first hit the headlines when he knocked Becker out of the French Open Tournament. ⇒ knockout¹(3)

3. DESTROY knock something ↔ out to damage something so that it does not work:
The air raids were planned to knock out communications on the ground.

4. ADMIRE knock somebody out informal if something knocks you out, it is very impressive and surprises you because it is so good:
She loved the movie. It knocked her out. ⇒ knockout¹(2)

5. PRODUCE knock something ↔ out informal to produce something easily and quickly:
Paul has been knocking out new songs for the album.

6. knock yourself out informal to work very hard in order to do something well

[TahlilGaran] Dictionary of Contemporary English ▲

knock out
knock (someone) out
1.
to hit someone so that they become unconscious.
His fall from the ladder knocked him out.

2.
to remove someone from a competition.
A loss in today's game will knock us out of the playoffs.

3.
to cause someone to go to sleep.
I didn't realize those pills would knock me out.

knock (someone/yourself) out
to make someone very tired.
Pat has really knocked herself out cooking this dinner.

All that shopping has knocked me out!

knock (something) out
1.
to cause something to stop working.
The lightning knocked out our electricity.

2.
to destroy something.
Enemy aircraft have knocked out 25 tanks.

[TahlilGaran] English Idioms Dictionary ▲

knock something out
knock (something) out
1.
to cause something to stop working.
The lightning knocked out our electricity.

2.
to destroy something.
Enemy aircraft have knocked out 25 tanks.

[TahlilGaran] English Idioms Dictionary ▲

knock out
• knock (someone or something) out
make someone unconscious, make something unworkable or unusable
The storm last night knocked out power in most of the town.

[TahlilGaran] English Idioms Dictionary ▲

knock something out
• knock (someone or something) out
make someone unconscious, make something unworkable or unusable
The storm last night knocked out power in most of the town.

[TahlilGaran] English Idioms Dictionary ▲

knock out
v. phr. To make helpless, unworkable, or unusable.
The champion knocked out the challenger in the third round.
The soldier knocked out two enemy tanks with his bazooka.

[TahlilGaran] English Idioms Dictionary ▲