How to Sign "I Know"

To sign 'I know,' start by forming a flat handshape and bending your fingers slightly at the knuckles. Bring your hand up to the side of your forehead and tap your fingertips against your temple. You can tap it once or twice, often accompanied by a slight head nod to emphasize your understanding.

Examples Using "I Know" in a Sentence

1

I know the answer to that question.

Sign 'I know' with a confident head nod, followed by the sign for 'answer'.

2

Yes, I know what you mean.

Use an empathetic facial expression and a gentle head nod while signing 'I know' to show agreement.

3

I know how to sign.

Sign 'I know' followed by 'how' and 'sign', keeping your movements smooth and clear.

How to Sign "I Know"
To sign 'I know,' start by forming a flat handshape and bending your fingers slightly at the knuckles. Bring your hand up to the side of your forehead and tap your fingertips against your temple. You can tap it once or twice, often accompanied by a slight head nod to emphasize your understanding.
Visual Logic(Etymology)
The sign for 'know' is highly iconic, originating from the concept of information being stored in the brain. Tapping the side of the head symbolizes pointing directly to the mind where knowledge and memory reside.
Signing Tips
Make sure to bend your fingers slightly at the knuckles rather than keeping them perfectly straight. The tap should be gentle against the side of your forehead. Adding an affirmative head nod helps convey the 'I' aspect naturally.
Common Mistakes
A common mistake is using a completely flat, stiff hand, which can look like a salute. Another mistake is tapping the center of the forehead instead of the side, or forgetting the facial expression that gives the sign its context.
Regional Variations
This sign is widely used and understood across the ASL community with minimal regional variation.
Examples Using "I Know" in a Sentence
1

I know the answer to that question.

Sign 'I know' with a confident head nod, followed by the sign for 'answer'.

2

Yes, I know what you mean.

Use an empathetic facial expression and a gentle head nod while signing 'I know' to show agreement.

3

I know how to sign.

Sign 'I know' followed by 'how' and 'sign', keeping your movements smooth and clear.

Frequently Asked Questions
Do I need to sign 'I' before 'know'?

In ASL, you often don't need to sign 'I' before 'know.' The context, along with a slight head nod, usually makes it clear that you are talking about yourself. You can sign 'I' first if you want to add emphasis.

What is the difference between 'know' and 'don't know'?

To sign 'don't know,' you start with the same handshape at your forehead, but then you turn your hand outward and away from your head while shaking your head 'no'.

Is this the same sign as 'understand'?

While they are related concepts, 'understand' has its own distinct sign, which involves flicking your index finger up near your forehead like a lightbulb turning on. Use 'I know' when referring to possessing facts or information.

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