| Clue | Source | Date |
|---|---|---|
| Very tough | The Telegraph Cross Atlantic | 02 Aug 2025 |
| Tough enough to be able to take a hammering? (4,2,5) | ||
| Callous, unfeeling (4,2,5) | ||
| Pointedly callous comparison? (4,2,5) | ||
| Extremely tough (4,2,5) | The Guardian Quick | 18 Aug 2024 |
| Harder snails sound ruthless (4,2,5) | ||
| Tough | ||
| Extremely stern | ||
| Tough | ||
| Tough | ||
| Stern | ||
| Tough | ||
| BEING THIS, A CARPENTER SURVIVES TOUGH SITUATIONS | ||
| Steely | ||
| Adamant; steely | ||
| Tough |