irrefutable

comparative more irrefutable · superlative most irrefutable

1. undeniable; unable to be disproved or refuted

   […]clear and irrefutable evidence of the Cause I have undertaken

   1653, Henry More, An Antidote against Atheisme, or An Appeal to the Natural Faculties of the Minde of Man, whether There Be Not a God, London: […] Roger Daniel, […], →OCLC

   3 more examples

   True, there had been nothing, in his lifetime, viler than this man. She knew it, there was no other fact within her consciousness that she felt to be so certain; and yet, because her persecutor found himself safe and irrefutable in death, he frowned upon his victim, and threw back the blame on her!

   1860, Nathaniel Hawthorne, The Marble Faun: Or, The Romance of Monte Beni. […], volume (please specify |volume=I or II), Boston, Mass.: Ticknor and Fields, →OCLC

   He had formed his mind by Helvetius, whose system he deemed irrefutable, and in whom alone he had faith.

   1845, B[enjamin] Disraeli, Sybil; or The Two Nations. […], volume (please specify |volume=I to III), London: Henry Colburn, […], →OCLC

   I have listened also to the remarks of counsel, with high interest—and especially will I commend the masterly and irrefutable logic of the distinguished gentleman who represents the plaintiff. But gentlemen, let us beware how we allow mere human testimony, human ingenuity in argument and human ideas of equity, to influence us at a moment so solemn as this.

   1870–1871 (date written), Mark Twain [pseudonym; Samuel Langhorne Clemens], Roughing It, Hartford, Conn.: American Publishing Company [et al.], published 1872, →OCLC

   Synonyms: positive, inarguable, incontestable, incontrovertible, indeniable, indisputable, indubitable, irrebuttable · Antonyms: refutable