How do you the letter X in sign language?

You don't sign the letter "X" in American Sign Language (ASL). ASL is a language with its own signs, and it doesn't use individual letters like English does.

If you are trying to sign a word that starts with the letter "X", you would use the sign for that word. For example, "X-ray" would be signed using the sign for "x-ray".

If you are trying to spell out the letter "X", you can use the finger spelling for "X", which is formed by touching your thumb and pinky finger together while extending the other three fingers.