I.
noun
1 firm sharp sound
ADJECTIVE
▪ loud , sharp
▪ gentle , light , quiet , soft
▪ timid
▪ sudden
VERB + KNOCK
▪ hear
▪ answer
▪
She hurried to answer the ~ at the door.
PHRASES
▪ a ~ at the door , a ~ on the door
▪
There was a loud ~ at the door.
2 sharp blow from sth
ADJECTIVE
▪ hard , nasty ( esp. BrE )
▪
the hard ~s of life ( figurative )
▪ minor ( esp. BrE )
VERB + KNOCK
▪ get , have , take
▪
You've had a nasty ~ on the head.
▪
Their pride took quite a ~ when they lost 5–0. ( figurative )
▪ give sb/sth
PREPOSITION
▪ ~ on
II.
verb
1 hit/bump
ADVERB
▪ accidentally
▪
I accidentally ~ed the vase over.
PREPOSITION
▪ against
▪
The stick ~ed against the wall.
▪ off
▪
He had ~ed one of the pictures off the wall.
▪ on
▪
I ~ed my head on one of the beams.
PHRASES
▪ ~ sb/sth flying
▪
He was ~ed flying as two policemen came crashing through the door.
▪ ~ sb off balance , ~ sb off their feet
▪
The explosion ~ed him off his feet.
▪ ~ sb senseless , ~ sb unconscious
▪
The blow ~ed him unconscious.
▪ ~ sb to the ground
2 bang on a door
ADVERB
▪ loudly
▪ gently , lightly , quietly , softly
▪ politely , timidly
PREPOSITION
▪ at
▪
Someone ~ed loudly at the door.
▪ on
▪
She ~ed timidly on the study door and entered.
PHRASES
▪ without ~ing
▪
Dobson walked straight into her office without ~ing.
Knock is used with these nouns as the subject: ↑ blow , ↑ knee
Knock is used with these nouns as the object: ↑ nail , ↑ shin