| Answer | Crossword Clue |
|---|---|
| irrevocable | Not able to be changed, reversed, or recovered; final |
| unrecoverable | Not able to be recovered or corrected |
| irrecoverable | Not able to be recovered, regained, or remedied |
| inconvertible | Not able to be changed in form, function, or character |
| inflexible | Not able to be changed or adapted to particular circumstances |
| unalterable | Not able to be changed |
