adjective
- not capable of being annulled, voided, or undone; permanent and unalterable
Usage: legal; formal
Examples
- The constitution grants citizens indefeasible rights to free speech.
- Her indefeasible title to the property could not be challenged in court.
- The treaty established an indefeasible peace between the two nations.
- He believed his claim to the inheritance was indefeasible.
- The law created an indefeasible trust for the benefit of future generations.
- The contract contained indefeasible provisions that could never be modified.