How to Sign "Knock"

To sign 'knock,' start by holding your non-dominant hand flat in front of you with the fingers pointing up and the palm facing your dominant side, representing a door. Form your dominant hand into a fist. Tap your dominant fist against the palm of your non-dominant hand twice, mimicking the real-world action of knocking on a door.

Examples Using "Knock" in a Sentence

1

Did you hear a knock at the door?

To sign this, you would sign 'hear', then sign 'knock' by tapping your fist against your flat hand, and finally point toward the location of the door.

2

Please knock before entering my room.

Start with the sign for 'please', then sign 'knock' using the standard double tap, followed by the signs for 'before' and 'enter'.

3

I knocked, but no one answered.

Point to yourself, sign 'knock', and then use a negative headshake while signing 'none' or 'answer' to show that there was no response.

How to Sign "Knock"
To sign 'knock,' start by holding your non-dominant hand flat in front of you with the fingers pointing up and the palm facing your dominant side, representing a door. Form your dominant hand into a fist. Tap your dominant fist against the palm of your non-dominant hand twice, mimicking the real-world action of knocking on a door.
Visual Logic(Etymology)
The sign for 'knock' is highly iconic, meaning it looks exactly like the action it represents. The flat non-dominant hand acts as a physical barrier, such as a wooden door or wall, while the dominant fist mimics the real-world physical action of a person knocking against that surface.
Signing Tips
Keep your non-dominant hand completely steady to clearly represent the solid surface of a door. The movement should come entirely from the wrist of your dominant hand, keeping the motion natural and recognizable, just as if you were actually knocking on a physical piece of wood.
Common Mistakes
A common mistake is moving both hands during the sign. Remember that the non-dominant hand acts as a stationary door, so only the dominant fist should move. Additionally, avoid using too much force; a gentle, controlled double tap is all you need to convey the meaning clearly.
Regional Variations
Some signers may simply mime knocking in the empty air without using the non-dominant hand as a base or 'door.' This one-handed variation is especially common in casual conversation or when the context of a door is already clearly established.
Examples Using "Knock" in a Sentence
1

Did you hear a knock at the door?

To sign this, you would sign 'hear', then sign 'knock' by tapping your fist against your flat hand, and finally point toward the location of the door.

2

Please knock before entering my room.

Start with the sign for 'please', then sign 'knock' using the standard double tap, followed by the signs for 'before' and 'enter'.

3

I knocked, but no one answered.

Point to yourself, sign 'knock', and then use a negative headshake while signing 'none' or 'answer' to show that there was no response.

Frequently Asked Questions
Do I always have to use my non-dominant hand for this sign?

While using the non-dominant hand as the 'door' is the standard dictionary sign and great for clarity, many signers simply mime knocking in the air during casual conversation. As a beginner, it is best to practice the two-handed version first to build a strong foundation.

How many times should I tap my fist?

Typically, you tap your fist against your flat hand twice. This standard double movement indicates the general action of knocking. However, if you are telling a story about someone knocking repeatedly or frantically, you might tap more times to show that continuous action.

Can I change the intensity of the knock to show emotion?

Absolutely! ASL is a highly expressive language. If you want to convey a loud, angry, or urgent knock, you can make the tapping motion larger, faster, and slightly more forceful, while pairing it with an intense or urgent facial expression.

ASL is a beautiful, expressive language. Practice regularly and have fun!