How to Sign "Underwater"

To sign 'underwater', you will combine the signs for 'water' and 'under'. Start by forming a 'W' handshape with your dominant hand and tapping the side of your index finger against your chin. Next, hold your non-dominant hand flat in front of you with the palm facing down. Place your flat dominant hand below it, and move it downward and slightly forward, dipping underneath the non-dominant hand.

Examples Using "Underwater" in a Sentence

1

I love swimming underwater.

Sign 'I', 'love', 'swim', and then use the compound sign for 'underwater' by signing 'water' followed immediately by 'under'.

2

Can you hold your breath underwater?

Sign 'You', 'hold-breath', and then 'underwater'. Make sure to raise your eyebrows and lean forward slightly at the end to indicate a yes/no question.

3

The camera is safe to use underwater.

Sign 'Camera', 'safe', 'use', and finish with the sign for 'underwater'. Keep the transition between 'water' and 'under' smooth.

How to Sign "Underwater"
To sign 'underwater', you will combine the signs for 'water' and 'under'. Start by forming a 'W' handshape with your dominant hand and tapping the side of your index finger against your chin. Next, hold your non-dominant hand flat in front of you with the palm facing down. Place your flat dominant hand below it, and move it downward and slightly forward, dipping underneath the non-dominant hand.
Visual Logic(Etymology)
This sign is a literal compound made of two highly visual concepts: 'water' and 'under'. The first part uses the English initialized 'W' handshape for 'water' placed near the mouth, which is the natural location for drinking. The second part visually represents something being submerged. Your non-dominant hand acts as a physical surface or barrier (the water's surface), and your dominant hand physically moves 'under' it, perfectly illustrating the concept.
Signing Tips
Make sure there is a clear, fluid transition between the two parts of this compound sign. After tapping your chin for 'water', smoothly bring your dominant hand down and immediately form the flat handshape for 'under'. Keep your non-dominant hand steady as the 'surface' that your dominant hand moves beneath. Practicing this transition will make the sign look much more natural and conversational, rather than looking like two disconnected words.
Common Mistakes
A common mistake for beginners is forgetting the first part of the sign ('water') and only signing 'under', which changes the meaning of your sentence completely. Another frequent error is moving the top (non-dominant) hand instead of the bottom hand. Remember that the top hand represents the stationary surface of the water, while your dominant hand represents the object or person moving underneath that surface.
Regional Variations
This sign is widely used and understood across the ASL community with minimal regional variation.
Examples Using "Underwater" in a Sentence
1

I love swimming underwater.

Sign 'I', 'love', 'swim', and then use the compound sign for 'underwater' by signing 'water' followed immediately by 'under'.

2

Can you hold your breath underwater?

Sign 'You', 'hold-breath', and then 'underwater'. Make sure to raise your eyebrows and lean forward slightly at the end to indicate a yes/no question.

3

The camera is safe to use underwater.

Sign 'Camera', 'safe', 'use', and finish with the sign for 'underwater'. Keep the transition between 'water' and 'under' smooth.

Frequently Asked Questions
Do I have to sign both 'water' and 'under'?

Yes, 'underwater' is a compound sign. If you only sign 'under', people won't know you are talking about water, and if you only sign 'water', the context of being submerged is lost.

Which hand goes on top for the second part of the sign?

Your non-dominant hand stays on top and remains stationary. Your dominant hand (the same one you used to sign 'water' on your chin) moves underneath it.

Can I just point down after signing water?

No, pointing down generally means 'down' or 'here'. To specifically mean 'underwater', you need to use the flat handshapes to visually show one thing going beneath another.

ASL is a beautiful, expressive language. Practice regularly and have fun!