Ĭn'con-tĕst'a-ble, a.

a. [Prefix in, not, and contestable; Fr. & Sp. incontestable, It. incontestabile.] Not contestable; not to be disputed; not admitting debate; too clear to be controverted; incontrovertible; as, incontestable evidence, truth, or facts.

Synonyms— Incontrovertible; indisputable; irrefragable; undeniable; unquestionable; indubitable.