Ziggy.

How to sign

Understand in ASL

Understand flicks the index finger up from a fist held at the side of the forehead, like a lightbulb turning on.

  • Single sign
  • One hand
  • Handshape: S fist flicking to a 1
  • Side of forehead
  • Communication

How to sign understand

  1. 1

    Hold a fist at the side of your forehead.

  2. 2

    Flick the index finger straight up.

  3. 3

    Nod for 'I understand'; shake your head for 'I don't understand.'

Common mistakes

  • Flicking the finger out forward. It goes up.

Keep going

More communication signs

All 21 signs

Questions about “Understand”

Yes. This clip shows the common ASL sign for understand. Like spoken languages, ASL has regional variation, so you may see small differences from signer to signer.