How to sign “Understand” in ASL
The BSL sign for “Understand” isn't in our dictionary yet — it will be fingerspelled in BSL mode, never replaced with this ASL sign.
Step by step
- Hold your index finger up beside your temple.
- Flick it upward sharply.
Practice tip
The flick looks like a light bulb switching on.
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.