Sign Language Mouth to Chest: Which Sign It Might Be and How to Tell

The short answer

No single sign means "mouth to chest." Many signs start at the mouth or chin and travel downward, and handshape, palm direction, end point and context change the meaning. In American Sign Language (ASL), the most common sign that matches this description is GOOD: a flat hand starts with its fingertips at the lips or chin, then moves down and forward, often landing palm-up on the other hand in front of the chest. THANK YOU starts the same way but moves outward toward the person being thanked instead of settling at chest level.

Sign languages are not universal. ASL, British Sign Language, Russian Sign Language and others have different vocabularies, so a movement that means one thing in ASL can mean something else or nothing in another sign language. The guidance below describes ASL. If the signer uses a different sign language, check a dictionary for that language.

Evidence note: no source material was supplied for this guide. The sign descriptions reflect widely taught ASL vocabulary, but regional and personal variants exist. Confirm them in an ASL dictionary or with a Deaf signer or qualified instructor.

ASL signs that move from the mouth area downward

Sign | Handshape | Movement | How it differs

GOOD | Flat hand, fingers together | Fingertips at lips or chin, then down and forward, often landing palm-up on the other palm at chest level | Ends low, in front of the body, often on the base hand

THANK YOU | Flat hand, fingers together | Fingertips at lips or chin, then outward and slightly down toward the other person | Moves away from the signer, not down to the chest

PROMISE | Index finger, then flat hand | Index finger at the lips, then the flat hand comes down onto the other hand | Starts with a single finger, ends on a base hand

HUNGRY | Curved C-shaped hand, palm toward the body | Moves down from the upper chest | Starts below the mouth and stays against the body

THIRSTY | Index finger | Fingertip traces down the front of the throat | Short path along the neck, single finger

How to recognize the sign step by step

• 1. Note the handshape at the start: flat hand, single index finger or curved C shape.
• 2. Find the exact starting point: lips, chin, throat or upper chest.
• 3. Follow the direction: straight down, down and forward, or out toward another person.
• 4. Check the end point: whether the hand lands on the other hand, stops in open space, or stays against the body.
• 5. Watch the face. Facial expression and mouth movements are part of the sign, and they also mark questions and emphasis.
• 6. Read it in context. Ask whether the surrounding conversation calls for thanks, approval, a promise or a physical need.

Verifying the meaning

Compare what you saw with an ASL video dictionary entry, since motion is hard to judge from text or still images. If you are talking with the signer, the most reliable check is to ask or to sign the word back. A sign repeated or exaggerated in a different way may be a variant or a related word, not a mistake.

A limitation on video calls

If you are watching the sign on a call, a tight head-and-shoulders frame can cut off the chest area and the non-dominant hand. That can make GOOD look like THANK YOU, or hide where a sign ends. Signers are generally easier to read when the frame shows the space from above the head to around the waist. A working camera and a live picture do not ensure this: compression, low frame rate or poor lighting can blur fast hand movements even when the video itself is running. If a sign remains unclear, asking the signer to repeat it or to fingerspell the word is a normal and accepted way to confirm.