WordReference Random House Learner's Dictionary of American English © 2026
ir•re•vers•i•ble /ˌɪrɪˈvɜrsəbəl/USA pronunciation
adj.
WordReference Random House Unabridged Dictionary of American English © 2026- not reversible;
that cannot be changed:His refusal is irreversible.
ir•re•vers•i•ble
(ir′i vûr′sə bəl),USA pronunciation adj.
ir′re•vers′i•bil′i•ty, ir′re•vers′i•ble•ness, n.
ir′re•vers′i•bly, adv.
- not reversible;
incapable of being changed:His refusal is irreversible.
- ir-2 + reversible 1620–30
ir′re•vers′i•bly, adv.
'irreversibly' also found in these entries (note: many are not synonyms or translations):