Definition of Knock
Quick Meaning of Knock
To tap or hit something, usually a door, to get someone's attention.
Detailed Definition of Knock
To hit or rap a surface sharply, typically a door, with knuckles or a hard object to get attention.
How to Pronounce Knock
Stress pattern: O (1-syllable word).
Tip: One short syllable with /ɑ/ vowel like 'ah' in 'father', followed by /k/ sound.
Watch out: Sometimes mispronounced with a silent 'k' sound; both the 'k' and 'n' should be audible.
Origin and Etymology of Knock
From Old English 'cnucian', related to Germanic languages meaning to strike or hit.
How to Use Knock in a Sentence
Each example shows “knock” with a CEFR level so learners can pick examples that match their fluency.
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“I knocked on the door three times before anyone answered.”
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“Someone is knocking loudly outside the house.”
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“The customer knocked repeatedly to gain entry to the locked building.”
Synonyms and Antonyms of Knock
Common Synonyms for Knock
Smart Synonyms for Knock — When to Use Each
- tap
- for gentle or light knocking sounds
- rap
- for quick sharp knocking, often in rhythm
- bang
- for loud forceful striking on something
Common Collocations with Knock
These phrases pair with “knock” in everyday English:
- knock on the door
- knock loudly
- knock twice
- knock on wood
- knock it off
Common Mistakes When Using Knock
Even fluent speakers slip up with “knock”. Here’s how to avoid the most common errors:
- ✗ Wrong: She knock the door when she arrive.
- ✓ Correct: She knocked the door when she arrived.
- Why: Both verbs need past tense: 'knocked' and 'arrived' for past events.
- ✗ Wrong: He is knocking to the door very hard.
- ✓ Correct: He is knocking on the door very hard.
- Why: Use preposition 'on' not 'to' when knocking on a surface like a door.
Words Confused With Knock
- Knock vs Knock off: Phrasal verb meaning to stop doing something or reduce price; different from simple 'knock'
Other Forms of Knock
Frequently Asked Questions About Knock
What is the meaning of "Knock"?
To tap or hit something, usually a door, to get someone's attention.
How do you pronounce "Knock"?
The IPA is /nɑk/. One short syllable with /ɑ/ vowel like 'ah' in 'father', followed by /k/ sound.
What part of speech is "Knock"?
"Knock" is a verb at A2 level (Common European Framework).
What are synonyms for "Knock"?
Common synonyms include tap, rap, bang.
How do you use "Knock" in a sentence?
For example: "I knocked on the door three times before anyone answered."