knock
UK: nɒk | US: nɑːk
v. to strike a surface noisily to attract attention
v. to collide forcefully with something
n. a sharp sound produced by striking a hard surface
n. a critical remark or setback
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"Knock" originates from Old English cnocian, meaning "to strike or pound." It is a Germanic word with onomatopoeic roots, imitating the sharp sound of impact. Unlike compound words, its structure is indivisible in modern English, retaining its compact form from ancient usage. The word’s evolution reflects its persistent association with percussive sounds and physical collisions.
She heard a loud knock at the door late at night.
The wind caused the branches to knock against the window.
He didn’t knock before entering, which startled everyone.
The boxer’s punch was strong enough to knock out his opponent.
Critics delivered a harsh knock to the author’s latest novel.