INDEFEASIBLE

indefeasible. Indefeasible, a. not to be vacated or cut off

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In′de‐fea′si‐ble (?), a. [[Pref. in- not + defeasible: cf. OF. indefaisable.]] Not to be defeated; not defeasible; incapable of being annulled or made void; as, an indefeasible or title. That the king had a divine and an indefeasible right to the regal power. Macaulay.