| Answer | Crossword Clue |
|---|---|
| EPEE | Inventor of a sign language. |
| EPEE | Inventor of a sign language |
| EPEE | Sign-language inventor |
| signs | to convey (a message) in sign language |
| sign | to convey (a message) in sign language |
| signed | to convey (a message) in sign language |
| WASHOE | Chimpanzee noted for learning a sign language |
| meaningful | Having a recognizable function in a logical language or other sign system |
