adj. Impossible to refute or controvert; indisputable: irrefragable evidence. [Late Latin irrefrāgābilis : Latin in-, not; see IN-1 + Latin refrāgārī, to oppose, resist; see bhreg- in the Appendix of Indo-European roots.] ir·ref′ra·ga·bili·ty n. ir·refra·ga·bly adv. |
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