1. impossible to change, reverse, or undo; final and permanent

Examples

• The judge’s decision was irrevocable and could not be appealed.
• Once you submit the form, your choice becomes irrevocable.
• The damage to their friendship seemed irrevocable after the betrayal.
• He made an irrevocable commitment to donate his entire fortune to charity.
• The company’s bankruptcy filing was an irrevocable step toward closure.
• Her irrevocable trust ensured the money would go directly to her children.