| Clue | Source | Date |
|---|---|---|
| Adamant | Commuter | 30 Nov 2024 |
| Refractory | ||
| Standing strong | Universal | 29 Oct 2020 |
| Adamant | The Telegraph Quick | 14 Mar 2020 |
| Inflexible | The Telegraph Quick | 17 Aug 2019 |
| Not shakable | Universal | 29 Aug 2017 |
| Not shakable | ||
| Indulge in trips round Yankee firm | ||
| Adamant. |