| Incontestable (a.) Not contestable; not to be disputed; that cannot be called in question or controverted; incontrovertible; indisputable; as, incontestable evidence, truth, or facts. Thesaurus Entries absolute, actual, admitting no question, certain, confirmable, demonstrable, demonstratable, factual, historical, impenetrable, impregnable, inappealable, incontrovertible, indisputable, indomitable, indubitable, inexpugnable, insuperable, invincible, inviolable, invulnerable, irrefragable, irrefutable, irresistible, overpowering, overwhelming, provable, real, resistless, self-evident, sure, testable, unanswerable, unassailable, unbeatable, unconfutable, unconquerable, uncontestable, undeniable, unimpeachable, unquestionable, unrefutable, unsubduable, unsurmountable, unyielding, verifiable |