| Clue | Source | Date |
|---|---|---|
| Give a knock | ||
| A ___ the knuckles | ||
| Strike, as a door | Newsday | 06 Feb 2024 |
| Hit with the knuckles | Premier Sunday | 03 Nov 2019 |
| Knock at | LA Times Daily | 30 Jul 2017 |
| Knock at | ||
| Knock at | ||
| Strike, as a door | ||
| Knock at | ||
| Hit with the knuckles | ||
| Knock at | ||
| ____ the knuckles: reprimand | ||
| Keep talking! |