| Clue | Source | Date |
|---|---|---|
| Heater for P.O.W. - but make it impervious to water (12) | ||
| Impervious to rain etc. (12) | The Guardian Speedy | 03 Nov 2024 |
| Resistant to elements | The Times Concise | 05 Sep 2021 |
| Is unaffected by the elements in, for example, global warming evidence | ||
| Resistant to rain, etc | The Times Concise | 19 Sep 2019 |
| Could have forecasted this was created by a philosopher keeping some elements out of The House | ||
| How a free port must work to provide elementary protection? | The Telegraph Cryptic | 13 Sep 2017 |
| Won't let anything in, as encompasses a number of elements one associates with philosopher |