| Irrefutable (a.) Incapable of being refuted or disproved; indisputable. Thesaurus Entries 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 |