1. in a way that cannot be undone, revoked, or made void
Usage: legal; formal

Examples

• The property was indefeasibly transferred to the new owner.
• Once signed, the contract indefeasibly bound both parties.
• The trust was indefeasibly established for the benefit of future generations.
• Her rights to the inheritance were indefeasibly secured by law.
• The deed indefeasibly conveyed ownership of the land.
• The constitutional amendment indefeasibly protected citizens’ voting rights.