(a.) Incapable of being refuted or disproved; indisputable.

absolute actual adducible admissible admitting no question attestative attestive authentic based on certain circumstantial conclusive confirmable convincing cumulative damning decisive demonstrable demonstratable determinative documentary documented evidential evidentiary ex parte eye-witness factual final firsthand founded on grounded on hearsay historical implicit inappealable incontestable incontrovertible indicative indisputable indubitable irrefragable irresistible material nuncupative overwhelming presumptive probative provable real reliable self-evident significant suggestive sure symptomatic telling testable unanswerable unconfutable uncontestable undeniable unimpeachable unquestionable unrefutable valid verifiable weighty