| Answer | Crossword Clue |
|---|---|
| WEAR | Sign of use |
| WEAR | Sign of use. |
| WEAR | Sign of gradual use |
| KESHA | Pop singer who used to use a dollar sign for the third letter of her name |
| ADD | Use a plus sign |
| KOKO | Gorilla trained to use sign language |
| KOKO | Gorilla famously taught to use sign language |
