| Clue | Source | Date |
|---|---|---|
| Chewed persistently | The Washington Post | 30 Dec 2018 |
| Chewed persistently | LA Times Daily | 30 Dec 2018 |
| Chewed persistently | ||
| Like many rubber toys | ||
| Nibbled | ||
| Wore away, in a way | ||
| Wore away, in a way | ||
| Wore away, in a way | ||
| Like an old dog bone | ||
| Nibbled, as a dog's bone |