Legal Definition
Irrevocable means that a contract or legal instrument has been formally and legally relinquished by the party granting it, meaning that the rights or options granted are no longer reversible or revocable by the original grantor.
Plain-English Translation
Imagine you sign a paper saying something is 'irrevocable.' This means that once you agree to the terms, you can't take those terms back or change them anymore. It’s a final decision where the rights are locked in and cannot be taken away by either party.