How to sign "s" in ASL

How to Sign the Letter "S"

The ASL letter “S” is signed by making a fist with your dominant hand:

• Curl all four fingers tightly into your palm.
• Place your thumb across the front of your fingers (not inside the fist).
• Keep your hand steady, palm facing slightly forward or to the side.

It looks just like making a strong fist — but with the thumb outside.

Watch a demo: Click here

Tips for Signing "S"

• Keep your thumb outside the fist — not tucked in!
• Don’t clench too tightly — keep it relaxed and visible.
• Practice spelling simple words like “sun” or “stop.”

Common Mistakes to Avoid

• Thumb tucked inside — this changes the meaning.
• Hand too low or hidden — make it visible to the viewer.
• Confusing it with the letter “A” (which also forms a fist).

“S” and “A” are similar — the thumb position makes all the difference!