Synonyms for knock

Noun

1. knock, knocking, sound

usage: the sound of knocking (as on a door or in an engine or bearing); "the knocking grew louder"

2. knock, roast, criticism, critique

usage: negative criticism

3. knock, bash, bang, smash, belt, bump, blow

usage: a vigorous blow; "the sudden knock floored him"; "he took a bash right in his face"; "he got a bang on the head"

4. knock, misfortune, bad luck

usage: a bad experience; "the school of hard knocks"

5. knock, belt, rap, whack, whang, blow

usage: the act of hitting vigorously; "he gave the table a whack"

Verb

1. knock, strike hard, strike, knock over, knock down, knock out, knock cold

usage: deliver a sharp blow or push :"He knocked the glass clear across the room"

2. knock, rap, knap

usage: rap with the knuckles; "knock on the door"

3. bump, knock, hit, strike, impinge on, run into, collide with, knock against, knock about

usage: knock against with force or violence; "My car bumped into the tree"

4. tap, rap, knock, pink, sound, go

usage: make light, repeated taps on a surface; "he was tapping his fingers on the table impatiently"

5. pink, ping, knock, sound, go

usage: sound like a car engine that is firing too early; "the car pinged when I put in low-octane gasoline"; "The car pinked when the ignition was too far retarded"

6. knock, criticize, criticise, pick apart, comment, notice, remark, point out

usage: find fault with; express criticism of; point out real or perceived flaws; "The paper criticized the new movie"; "Don't knock the food--it's free"