Dictionary-enhanced word family
Word Forms of “Knock”
To tap or hit something, usually a door, to get someone's attention.
Word Family of Knock
Some English words keep the same spelling as a noun and a verb. Context tells you which form is being used.
How to Use Each Word Form in a Sentence
- I knocked on the door three times before anyone answered. A2
- Someone is knocking loudly outside the house. A2
- The customer knocked repeatedly to gain entry to the locked building. B1
Origin and Word Formation of Knock
From Old English 'cnucian', related to Germanic languages meaning to strike or hit.
Common in everyday life: knocking on doors, window panes. Idioms: 'knock on wood' (superstition for luck), 'knock it off' (stop doing something).
Common Word Form Mistakes with Knock
Wrong: She knock the door when she arrive.
Correct: She knocked the door when she arrived.
Both verbs need past tense: 'knocked' and 'arrived' for past events.
Frequently Asked Questions About Word Forms of Knock
What are the word forms of “knock”?
The confirmed forms are shown in the word family cards above. Missing parts of speech are hidden instead of filled with placeholder text.
What part of speech is “knock”?
“knock” is primarily a verb. Some forms above show how the same root works as other parts of speech.
Can “knock” be both a noun and a verb?
Yes. Some words keep the same spelling across parts of speech; the surrounding sentence shows the function.
Where does “knock” come from?
From Old English 'cnucian', related to Germanic languages meaning to strike or hit.