51Թ

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View synonyms for

knock

[nok]

verb (used without object)

  1. to strike a sounding blow with the fist, knuckles, or anything hard, especially on a door, window, or the like, as in seeking admittance, calling attention, or giving a signal.

    to knock on the door before entering.

  2. to strike in collision; bump.

    He knocked into a table.

  3. to make a pounding noise.

    The engine of our car is knocking badly.

  4. Informal.to engage in trivial or carping criticism; find fault.

  5. Cards.to end a game, as in gin rummy, by laying down a hand in which those cards not included in sets total less than a specific amount.



verb (used with object)

  1. to give a sounding or forcible blow to; hit; strike; beat.

  2. to drive, force, or render by a blow or blows.

    to knock a man senseless.

  3. to make by striking a blow or blows.

    to knock a hole in the wall.

  4. to strike (a thing) against something else.

  5. Informal.to criticize, especially in a carping manner.

    He's always knocking everything.

  6. British Slang.to astound; impress greatly.

noun

  1. an act or instance of knocking.

  2. the sound of knocking, especially a rap, as at a door.

  3. a blow or thump.

  4. Informal.an adverse criticism.

  5. the noise resulting from faulty combustion or from incorrect functioning of some part of an internal-combustion engine.

  6. Cricket.an innings.

  7. British Slang.

    1. one of a combination of dealers who bid together, rather than against each other, at an auction, and later resell the purchases among themselves.

    2. an auction at which this is done.

    3. the sale of merchandise recently obtained by a dealer at an auction.

verb phrase

    1. Slangto make pregnant.

    2. to exhaust; weary; tire.

    3. to damage; mar.

      The children knocked up the new table.

    4. to injure; wound.

      He was afraid to come home from school all knocked up again.

    5. Britishto wake up; rouse; call.

      He knocked us up before dawn.

  1. to make or construct in a hurry or with little attention to detail.

    He knocked together a couple of tables.

  2. Informal

    1. to wander aimlessly or idly; loaf.

    2. to mistreat (someone), especially physically.

    3. to jar; shake up.

    1. Informalto cease activity, especially work.

      to knock off at five every day.

    2. to stop doing something; quit.

      Knock it off or you'll get into a mess.

    3. Slangto dispose of; finish.

    4. Slangto murder; kill.

    5. Slangto die.

    6. Slangto get rid of; reduce.

    7. Slangto disable or defeat.

    8. Slangto commit a robbery at; steal from.

      The gang knocked off a gas station.

    9. Nauticalto blow the head (of a sailing vessel) off the wind.

    10. to imitate, copy, or plagiarize.

      to knock off designer dresses in cheap materials.

  3. Slangto drink (a beverage), especially quickly and heartily.

    He knocked back two shots of vodka.

    1. to defeat (an opponent) in a boxing match by striking such a blow that the opponent is unable to rise within the specified time.

    2. to render (a person) unconscious.

      Those sleeping pills knocked me out for ten hours.

    3. to make tired or exhausted.

      Christmas shopping always knocks me out.

    4. Informalto produce quickly, hurriedly, or with ease.

      He knocks out two poems a day.

    5. to damage or destroy.

      The explosion knocked out the power for several hours.

    6. knock.

    1. to strike (someone or something) from an erect to a prone position.

      to knock over a lamp.

    2. to distress; overcome.

      When the announcement came we were completely knocked over.

    3. Slangto rob, burglarize, or hijack.

      He knocked over five banks.

    1. to sell at auction by a blow of the hammer or to a bidder.

    2. to take apart or disassemble, as for facility in handling, storing, shipping, etc.

    3. Slangto receive, as a salary or a scholastic grade; earn.

      He knocks down 30 grand a year.

    4. Informalto lower the price of; reduce.

      to knock down end-of-season leftovers.

    5. Slangto embezzle or steal (money).

    6. to cause (a sailing vessel) to heel, as by a gust of wind, to such a degree that it cannot right itself.

knock

/ ɒ /

verb

  1. (tr) to give a blow or push to; strike

  2. (intr) to rap sharply with the knuckles, a hard object, etc, esp to capture attention

    to knock at the door

  3. (tr) to make or force by striking

    to knock a hole in the wall

  4. to collide (with)

  5. (tr) to bring into a certain condition by hitting or pushing

    to knock someone unconscious

  6. informal(tr) to criticize adversely; belittle

    to knock someone's work

  7. Also: pink.(intr) (of an internal-combustion engine) to emit a characteristic metallic noise as a result of faulty combustion

  8. (intr) (of a bearing, esp one in an engine) to emit a regular characteristic sound as a result of wear

  9. slangto have sexual intercourse with (a person)

  10. informalto hit a person with a very heavy blow

  11. to have a violent or unpleasant encounter with (adverse facts or circumstances)

    1. to daze or kill (a person) by striking on the head

    2. effectively to prevent the further development of (a plan)

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

    1. a blow, push, or rap

      he gave the table a knock

    2. the sound so caused

  1. the sound of knocking in an engine or bearing

  2. informala misfortune, rebuff, or setback

  3. informalunfavourable criticism

  4. informal(in cricket) an innings or a spell of batting

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Other 51Թ Forms

  • knockless adjective
  • reknock verb
  • unknocked adjective
  • unknocking adjective
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51Թ History and Origins

Origin of knock1

First recorded before 1000; 1890–95 knock for def. 4; Middle English knokken, knoken (verb), Old English cnocian, cnucian; cognate with Old Norse knoka “to thump, knock”
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51Թ History and Origins

Origin of knock1

Old English cnocian, of imitative origin; related to Old Norse knoka to hit
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Idioms and Phrases

Idioms
  1. knock out of the box, to cause a pitcher to be removed from the box because the pitcher has permitted too many hits to be made. Also knock out.

  2. knock the / one's socks off, to have an overwhelming effect on.

    The song knocked the socks off the audience.

  3. have it knocked, to be assured of success.

    With a government job, he thought he had it knocked.

In addition to the idioms beginning with knock, also see beat (knock) into someone's head; beat (knock) the living daylights out of; (knock) down to size; (knock) off someone's feet; school of hard knocks.
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Synonym Study

See strike.
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Example Sentences

Examples have not been reviewed.

Rip all of that away overnight, and they’re knocked off balance.

From

Officers on horseback wove chaotically through traffic, knocking a protester to the ground.

From

As well as knocking more than six seconds off the British record, Mills also beat his personal best by more than 12 seconds.

From

"Workers said we want to knock down your garage and we need your drive for a working area," claimed John.

From

“You’re probably going to have a detective knocking at your door.”

From

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When To Use

What is a basic definition ofknock?

Knock is a verb that means to hit something by bumping into it. Knock also means to repeatedly strike something to make a noise. Knock is used as a noun to mean a sound made by repeated tapping. Knock has many other senses as a verb and a noun. It is also used in several idioms.Knock means to strike something by bumping into it or colliding with it. This sense of knock is often followed by what was bumped into  (knocked onto the floor).



  • Real-life examples: In bowling, the goal is to knock down all of the pins with a bowling ball. In boxing, the competitors repeatedly knock each other in the head and body with their fists. It is difficult to build a house of cards without accidentally knocking it over.


  • Used in a sentence: Shawna wasn’t paying attention and accidentally knocked over a stack of boxes. 


When you knock on a door, you hit it with your knuckles, fist, or an object, like a door knocker, usually repeatedly. You might knock on a door or window to get someone’s attention or to signal to them that you want to be let inside (or out!).



  • Used in a sentence: He knocked on the wall with his umbrella to get everyone’s attention. 


In a related sense, a knock is the noise you make when you hit something, like a door or window, to get someone’s attention.



  • Used in a sentence: I think you have a visitor because I heard a knock at the door. 


The word knock is used in several idioms. For example, if someone “knocks your socks off,” it means they have a positive, overwhelming effect on you.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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