a. [ Pref. in- not + contestable: cf. F. incontestable. ] Not contestable; not to be disputed; that cannot be called in question or controverted; incontrovertible; indisputable; as, incontestable evidence, truth, or facts. Locke.
Syn. -- Incontrovertible; indisputable; irrefragable; undeniable; unquestionable; intuitable; certain.
-- In`con*test"a*ble*ness, n. -- In`con*test"a*bly, adv. [ 1913 Webster ]