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Knock Out

How to Conjugate Knock Out

  • Infinitive: Knock Out
  • Present Tense: Knock Out/ Knocks Out
  • -ing Form: Knocking Out
  • Past Tense: Knocked Out
  • Past Participle: Knocked Out
Knock Out is a separable phrasal verb and has 6 definitions.

Definitions of Knock Out:

1. When someone is struck hard enough to cause them to lose consciousness.

Examples: Many Pacquaio knocks out his opponents in most of his fights.
I once fell so hard while skateboarding that I got knocked out.

2. When you are greatly surprised or impressed by something or someone.

Examples: Harry is in love with Sally. I mean, it’s pretty obvious how Sally’s smile knocks him out.
I am knocked out by how successful you have become in such a short span of time.

3. When you try very hard to achieve something or to please other people.

Examples: Stacey knocked herself out preparing for this event, so let’s support her by being there.
Don’t knock yourself out trying to impress her, it may not be worth it in the end.

4. When someone or something destroys equipment and render it inoperable.

Examples: The communications tower in our area was knocked out by the awful storm.
We better do something about that tree before it falls and knocks out the power line.

5. When you produce something very quickly.

Examples: Tom is in great shape. He can knock out 50 pushups without sweating.
The movie industry is knocking out hundreds terrible movies every year.

6. Note: Knockout (n.) can be used as a noun. A Knockout is something or someone that leaves a lasting impression on your mind

Examples: The movie was a real knockout!

See our complete list of English phrasal verbs.