Knock Definition

nŏk
knocked, knocking, knocks
verb
knocked, knocking, knocks
To hit; strike.
Webster's New World
To affect in a specified way by striking hard.
Knocked the mugger senseless.
American Heritage
To find fault with; criticize adversely.
Webster's New World
To cause to be displaced or unengaged; force.
A wind that knocked the tower over; a blunder that knocked him out of the job.
American Heritage
To make by hitting or striking.
To knock a hole in a wall.
Webster's New World
Antonyms:
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noun
knocks
An instance of striking or colliding.
American Heritage
The act of knocking.
Webster's New World
A hit; sharp or resounding blow; rap, as on a door.
Webster's New World
A thumping or rattling noise in an engine, etc., as because of faulty combustion.
Webster's New World
An adverse criticism.
Webster's New World
Antonyms:
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idiom
have it knocked
  • To be certain of success:
American Heritage
knock cold
  • To render unconscious; knock out.
American Heritage
knock dead
  • To kill with a blow.
  • To affect strongly and positively:

    a performance that knocked the audience dead.

American Heritage
knock it off
  • To stop doing something. Often used in the imperative:

    He asked us to knock it off.

American Heritage
knock out of the box
  • To force the removal of (an opposing pitcher) by heavy hitting.
American Heritage
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Other Word Forms of Knock

Noun

Singular:
knock
Plural:
knocks

Origin of Knock

  • Akin to Old Norse knoka (compare Swedish knocka, Danish knuge, to hug) and Middle High German knochen, to hit.

    From Wiktionary

  • Middle English knokken from Old English cnocian

    From American Heritage Dictionary of the English Language, 5th Edition

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