| Clue | Source | Date |
|---|---|---|
| Make a hissing bubbling noise (6) | ||
| Go out with a splutter (6) | ||
| Peter out | Eugene Sheffer | 28 Mar 2024 |
| ____ out; die down | The Times Concise | 08 Sep 2019 |
| Evidence of snoozing in line, military failure | ||
| Sputter out | Newsday | 19 Sep 2018 |
| In light rain, doctor is fine to go out | The Telegraph Toughie | 28 Jun 2018 |
| They say pop will die, having promised much | ||
| Fail miserably | ||
| Go out with a whimper | ||
| Prove a failure | ||
| See 20 Across. | ||
| Peter out. |