(noun, verb)


1. the sound of knocking (as on a door or in an engine or bearing)

- the knocking grew louder

Similar word(s): knocking

Definition categories: event, sound

2. negative criticism

Similar word(s): roast

Definition categories: thought, criticism, critique

3. a vigorous blow

- the sudden knock floored him

Similar word(s): bang, bash, belt, smash

Definition categories: event, blow, bump

4. a bad experience

- the school of hard knocks

Definition categories: event, misfortune

5. the act of hitting vigorously

Similar word(s): belt, rap, whack, whang

Definition categories: act, blow

Sentences with knock as a noun:

- I heard a knock on my door.

- He took a knock on the head.

- He played a slow but sure knock of 35.


1. deliver a sharp blow or push

- He knocked the glass clear across the room

Definition categories: contact, strike

2. rap with the knuckles

- knock on the door

Definition categories: contact, knap, rap

3. knock against with force or violence

Similar word(s): bump

Definition categories: contact, hit, strike

4. make light, repeated taps on a surface

Similar word(s): pink, rap, tap

Definition categories: perception, go, sound

5. sound like a car engine that is firing too early

Similar word(s): ping, pink

Definition categories: perception, go, sound

6. find fault with; express criticism of; point out real or perceived flaws

- Don't knock the food--it's free

Similar word(s): criticise, criticize

Definition categories: communication, comment, notice, remark

Sentences with knock as a verb:

- Knock on the door and find out if they're home.

- I knocked against the table and bruised my leg.

- I accidentally knocked my drink off the bar.

- Don't knock it until you've tried it.