How to sign “Don't know” in ASL
BSL and ASL are different languages — this is the American sign. See the BSL sign for “Don't know” instead
Step by step
- Touch your forehead with your flat hand.
- Flick your hand outward away from your head while shaking your head slightly.
Practice tip
The flick-away adds the 'not' to KNOW.
Text-based guide researched from established ASL references (Lifeprint, university and public-health materials) and rewritten in original words. Signer-created photos and videos are a planned future upgrade.