- Do you ever feel unsure whether to say “knock at the door” or “knock on the door”?
- Have you tried to express a sudden surprise, only to find your English phrase sounded a bit… off?
- Are you looking for ways to make your English sound more natural and fluent, beyond just knowing individual words?
Mastering English collocations is a game-changer for anyone aspiring to speak and write like a native. Collocations are simply words that frequently go together, and knowing them not only boosts your fluency and comprehension but also significantly reduces the awkwardness of literal translation. Let’s unlock the power of natural English by exploring the versatile world of Knock Collocations.
Common Collocations with KNOCK as a Verb
As a verb, ‘knock’ usually describes hitting something, often producing a sound, or having an impact. It can be physical or figurative, and the prepositions used with it are crucial for correct meaning.
Physical Actions and Sounds
- knock on/at the door: To strike a door to get attention.
Example: “She had to knock on the door three times before anyone answered.”
Example: “There was a loud knock at the door, making everyone jump.”
- knock over: To hit something, causing it to fall to one side.
Example: “Be careful not to knock over your coffee cup!”
- knock down: To hit something, causing it to fall to the ground, or to demolish a building.
Example: “The strong winds could easily knock down that old fence.”
Example: “The city plans to knock down the abandoned factory.”
- knock out: To make someone unconscious, or to eliminate from a competition.
Example: “The boxer managed to knock out his opponent in the first round.”
Example: “Our team was unfortunately knocked out of the cup competition.”
- knock against: To accidentally hit something or someone.
Example: “He accidentally knocked against the table and spilled his drink.”
- knock together: To make or build something quickly and often crudely.
Example: “I can probably knock together a quick meal with what we have in the fridge.”
Figurative and Idiomatic Expressions
- knock off (work): To stop working for the day. (Informal)
Example: “What time do you usually knock off work?”
- knock it off!: An exclamation telling someone to stop doing something annoying. (Informal)
Example: “Kids, please knock it off! You’re making too much noise.”
- knock back (a drink): To drink something quickly, especially alcohol. (Informal)
Example: “He quickly knocked back a glass of water after his run.”
- knock someone’s socks off: To impress or delight someone greatly. (Informal)
Example: “Her performance is going to knock your socks off.”
- knock on wood / touch wood: To express a hope that a good situation will continue or that a bad one will not occur. (Often accompanied by actually touching wood. “Touch wood” is more common in British English).
Example: “I haven’t been sick all year, knock on wood.”
- knock for six: To surprise or shock someone severely (British English).
Example: “The news of his resignation really knocked me for six.”
Essential Collocations using KNOCK as a Noun
When used as a noun, ‘knock’ refers to the sound made by hitting something, or the blow or impact itself. It can also be part of various idiomatic phrases.
Sounds and Impacts
- a knock on the door: The sound of someone hitting the door.
Example: “We heard a faint knock on the door just after midnight.”
- a gentle/loud knock: Describing the intensity of the sound.
Example: “She gave a gentle knock before entering the room.”
Example: “There was a loud knock that startled everyone.”
- a knock to the head: A blow or impact to the head.
Example: “He got a nasty knock to the head during the football game.”
- engine knock: A rattling sound in an internal combustion engine caused by abnormal combustion.
Example: “I’m worried about that strange engine knock; I think we need a mechanic.”
Figurative and Idiomatic Expressions
- a knock-on effect: An indirect result of an event or action that spreads to other things.
Example: “The factory closure had a huge knock-on effect on local businesses.”
- take a knock: To suffer damage, a setback, or a reduction in value or confidence.
Example: “His reputation really took a knock after the scandal.”
Example: “The company’s profits took a knock last quarter.”
- the school of hard knocks: Learning about life through difficult experiences rather than formal education.
Example: “He didn’t go to university, but he graduated from the school of hard knocks.”
| Collocation | Part of Speech | Quick Meaning |
|---|---|---|
| knock on/at the door | Verb / Noun | Hit a door to gain entry/attention; the sound itself. |
| knock over | Verb | Cause something to fall. |
| knock down | Verb | Cause to fall to the ground; demolish. |
| knock out | Verb | Make unconscious; eliminate from competition. |
| knock off (work) | Verb | Stop working. |
| knock it off! | Verb (Idiom) | Stop doing that! |
| knock back (a drink) | Verb | Drink quickly. |
| knock someone’s socks off | Verb (Idiom) | Greatly impress someone. |
| knock on wood | Verb (Idiom) | Hope for good luck to continue/happen. |
| a knock-on effect | Noun | Indirect consequence. |
| take a knock | Verb (Idiom) | Suffer a setback or damage. |
| the school of hard knocks | Noun (Idiom) | Learning from difficult life experiences. |
Common Mistakes: Natural vs Unnatural
Avoid literal translations. Pay close attention to prepositions and idiomatic usage to sound truly natural.
| Do Not Say | Say This |
|---|---|
| Hit the door. (Unless you mean violently.) | Knock on/at the door. |
| Finish work. (Less informal) | Knock off work. (Informal, natural) |
| Make a table quickly. | Knock together a table. |
| The problem had an indirect impact. | The problem had a knock-on effect. |
| He suffered a bad experience. | His reputation took a knock. |
“I was rushing through the crowded office, and I accidentally knocked over a stack of documents. My boss, Mr. Henderson, usually strict, just chuckled and said, ‘It’s fine, we can always knock together a new filing system.’ Later, after a long day, I was glad to knock off work. On my way out, I heard someone give a soft knock on the door to the main conference room. I hoped my early clumsiness wouldn’t have a knock-on effect on my performance review. But then I remembered a saying from the school of hard knocks: everyone makes mistakes, it’s how you recover that matters.”
Frequently Asked Questions about Knock Collocations
What’s the difference between “knock on the door” and “knock at the door”?
Both “knock on the door” and “knock at the door” are widely accepted and understood. “Knock on the door” implies the action of hitting the surface of the door, while “knock at the door” suggests knocking with the intention of gaining entry at the location of the door. In everyday use, they are often interchangeable, though “knock on the door” is slightly more common in many regions.
Is “knock off” always informal or can it be used in formal contexts?
“Knock off” meaning to stop working is definitely informal and should be avoided in formal business communications or academic writing. However, “knock off” can also mean to produce something quickly (e.g., “to knock off a copy”), which is also generally informal. Always consider your audience and the context when using this phrasal verb.
Can “knock down” be used for people, like “knock out”?
Yes, “knock down” can be used for people, typically meaning to hit someone so hard that they fall to the ground, but they might not be unconscious. For example, “The car knocked down the pedestrian.” “Knock out,” on the other hand, specifically means to make someone unconscious, usually through a blow to the head, often seen in boxing. So, “knock down” implies falling, while “knock out” implies unconsciousness.
What does it mean to “knock someone back” financially?
To “knock someone back” financially means to cost them a significant amount of money. For example, “That new car will really knock you back about fifty thousand dollars.” It’s an informal expression suggesting a high cost or expense.
Are there any “knock” collocations with positive meanings?
Absolutely! While many “knock” collocations involve impacts or difficulties, phrases like “knock someone’s socks off” (to impress greatly) are very positive. Another informal one is “knock it out of the park,” which means to perform exceptionally well or achieve a great success. For instance, “Her presentation really knocked it out of the park.”
If I am criticizing someone's work, can I say 'Don't knock it until you've tried it'?
What are 'knock-knock' jokes? My American friends find them funny, but I don't always get the pun.
Knock-knock jokes are a classic type of 'call and response' wordplay in English. They always follow a specific pattern. They are a fun way to practice English phonetics and double meanings!
I'm a big fan of Bob Dylan, so 'Knockin' on Heaven's Door' was the first time I learned this word. Songs are such a good way to learn collocations.
I noticed 'knock' can be a noun too, like 'there was a knock.' Can we say 'a knock on the window' as well?
Absolutely, Isabella! 'Knock' works perfectly as a noun. You can have a knock on the door, the window, or even a knock on the head!
Is there a difference between 'knock' and 'bang'? If someone is 'banging' on the door, are they just knocking very loudly?
I love the phrase 'knock some sense into someone.' It sounds very aggressive, but is it used playfully too?
It can be, Amelie! While it sounds physical, it's almost always used figuratively. It means to help someone realize they are being foolish. It's often used by parents or friends in a firm but caring way.
Does 'knock around' mean the same thing as 'hang out'?
I sometimes mix up 'knock out' and 'knock up.' I've been told to be very careful with 'knock up' in the US. Is that true?
Yes, Chen, definitely be careful! In the US, 'knock up' is slang for making someone pregnant. However, in British English, 'knock someone up' can mean to wake someone up by knocking on their door. Context and geography are very important here!
The example 'knocked for six'—is that common everywhere? I found it in a book but I'm not sure if people actually say it.
In my office, someone said they were 'knocking off' at 5 PM. Does that mean they are breaking something?
Not at all, Hans! 'Knock off' is a very common informal phrasal verb meaning to finish work for the day. It's a great one to use with your colleagues!