Synonyms of irrevocable

1 Syllable

lost

2 Syllables

doomed, fated, certain, binding, goner, final, settled, constant

3 Syllables

changeless, hard-and-fast, permanent, hopeless

4 Syllables

predestined, immutable, invariable, unarguable, conclusive, indelible, established, unredeemed

5 Syllables

unpreventable, unalterable, inevitable, irremediable, irreversible, unrepealable, unreversible, irretrievable, unappealable, predetermined