Ir‐ref″ra‐ga‐ble (ĭr‐rĕf″rȧ‐gȧ‐b'l), a. [F. irréfragable, L. irrefragabilis. See Refragable.] Not refragable; not to be gainsaid or denied; not to be refuted or overthrown; unanswerable; incontestable; undeniable; as, an irrefragable argument; irrefragable evidence. — Ir‐ref″ra‐ga‐ble‐ness, n. — Ir‐ref″ra‐ga‐bly, adv.
Syn. — Incontrovertible; unanswerable; indisputable; unquestionable; incontestable; indubitable; undeniable; irrefutable.