adjective
irrevocable
ih-REV-uh-kuh-bul/ɪˈrevəkəbl/
Impossible to reverse or take back.
The handprint becomes irrevocable as the concrete hardens around its shape.

Etymology
The literal image is something that cannot be called back. Calling back also meant rescinding or annulling, so an irrevocable decision or action cannot be withdrawn or undone.
In context
In one short week would God resume his soul and set it apart for its irrevocable doom. Seven more tedious days and nights of senseless inactivity, and all would be over
More examples
- Deleting the only copy would be an irrevocable mistake.
- Her resignation became irrevocable once the board accepted it.
- The donor made an irrevocable gift to the museum.
Forms
irrevocable
Similar words
- irreversible
- Irreversible cannot be undone; irrevocable especially describes something that cannot be withdrawn or canceled.
- final
- Final indicates the last or settled decision; irrevocable says it cannot be taken back.