| Clue | Source | Date |
|---|---|---|
| Raises the volume of; nodules (anag.) | The Telegraph Cross Atlantic | 09 Jun 2025 |
| Strengthens in volume | Premier Sunday | 08 Jul 2018 |
| Turns up | Wall Street Journal | 17 Jun 2017 |
| Turns up the volume | ||
| Intensifies, perhaps | ||
| Intensifies, perhaps | ||
| Turns up | ||
| Crescendos | ||
| Turns up | ||
| Crescendos |