| Clue | Source | Date |
|---|---|---|
| It's more difficult holding one that's stronger | ||
| More able to endure | ||
| It's tougher accepting one is stouter (7) | ||
| It's tougher accepting one is stouter | The Telegraph Toughie | 08 Feb 2024 |
| Like kale vis-à-vis lettuce | New York Times | 21 Jan 2024 |
| Like kale vis-a-vis lettuce | ||
| Runner has day for run, showing more endurance | The Guardian Cryptic | 21 Apr 2023 |
| More resilient | Canadiana | 12 Nov 2018 |
| More robust | ||
| More robust | ||
| More resilient | ||
| Made of sterner stuff. | ||
| More stalwart | ||
| More robust. |