indefeasible
adjectiveThat cannot be annulled or made void.
Not defeasible; not to be defeated or made void; that cannot be set aside or overcome.
adjectiveNot to be defeated; not defeasible; incapable of being annulled or made void.
adjectivenot liable to being annulled or declared void.
adjectivenot liable to being annulled or voided or undone