How to Sign "Impossible"

To sign 'impossible', hold your non-dominant hand flat in front of you with the palm facing up. Form a 'Y' handshape with your dominant hand by extending your thumb and pinky finger while curling the rest. Strike the palm of your non-dominant hand twice with your dominant hand in a firm, bouncing motion. Shake your head slightly while signing to emphasize the negative meaning.

Examples Using "Impossible" in a Sentence

1

It is impossible to finish this today.

Sign 'finish today' and then use the sign for 'impossible' with a strong head shake to emphasize that the task simply cannot be completed in time.

2

That math test was impossible!

After signing 'math test', sign 'impossible' with an exaggerated, frustrated facial expression to show just how incredibly difficult the exam was.

3

I thought it was impossible, but I did it.

Sign 'think impossible' with a doubtful facial expression and a head shake, then transition to a bright, positive expression while signing 'but finish' or 'but do'.

How to Sign "Impossible"
To sign 'impossible', hold your non-dominant hand flat in front of you with the palm facing up. Form a 'Y' handshape with your dominant hand by extending your thumb and pinky finger while curling the rest. Strike the palm of your non-dominant hand twice with your dominant hand in a firm, bouncing motion. Shake your head slightly while signing to emphasize the negative meaning.
Visual Logic(Etymology)
The sign for 'impossible' is visually related to the concept of an idea being firmly struck down or rejected. The bouncing strike of the 'Y' hand against the open palm acts as a visual metaphor for a solid barrier, indicating that an action simply cannot proceed.
Signing Tips
Make sure your dominant hand maintains a clear 'Y' handshape with the thumb and pinky fully extended. The movement should be a firm, deliberate double strike against your non-dominant palm, almost like a bouncing hammer. Always pair this sign with a head shake and a slightly furrowed brow to clearly convey the meaning of 'no way' or 'cannot happen'.
Common Mistakes
A common mistake is using a flat hand or an 'S' fist for the dominant hand instead of the correct 'Y' handshape. Beginners also sometimes strike the hand only once, but 'impossible' requires a double bounce. Additionally, forgetting the negative facial expression can make the sign look robotic and strip away the intended emphasis.
Regional Variations
This sign is widely used and understood across the ASL community with minimal regional variation.
Examples Using "Impossible" in a Sentence
1

It is impossible to finish this today.

Sign 'finish today' and then use the sign for 'impossible' with a strong head shake to emphasize that the task simply cannot be completed in time.

2

That math test was impossible!

After signing 'math test', sign 'impossible' with an exaggerated, frustrated facial expression to show just how incredibly difficult the exam was.

3

I thought it was impossible, but I did it.

Sign 'think impossible' with a doubtful facial expression and a head shake, then transition to a bright, positive expression while signing 'but finish' or 'but do'.

Frequently Asked Questions
Is 'impossible' signed the same way as 'can't'?

No, they are distinct signs. 'Can't' is signed by striking the index finger of your dominant hand downward over the extended index finger of your non-dominant hand. 'Impossible' uses a 'Y' handshape striking an open palm.

Do I have to strike my hand twice?

Yes, the double strike is the standard dictionary form for 'impossible'. A single, very forceful strike is occasionally used in casual conversation for dramatic emphasis to mean 'absolutely not,' but beginners should stick to the double bounce.

Does it matter which hand I use to strike?

Yes, you should always use your dominant hand to perform the active striking motion with the 'Y' handshape. Your non-dominant hand should act as the stationary base. This keeps your signing natural and consistent.

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