Word Study
irrefragable
CIDE DICTIONARY
irrefragable, a. [F. irréfragable, L. irrefragabilis. See Refragable.].
Not refragable; not to be gainsaid or denied; not to be refuted or overthrown; irrefutable; unanswerable; incontestable; undeniable; as, an irrefragable argument; irrefragable evidence.
Syn. -- Incontrovertible; unanswerable; indisputable; unquestionable; incontestable; indubitable; undeniable; irrefutable.
OXFORD DICTIONARY
irrefragable, adj.
1 (of a statement, argument, or person) unanswerable, indisputable.
2 (of rules etc.) inviolable.
1 (of a statement, argument, or person) unanswerable, indisputable.
2 (of rules etc.) inviolable.
Derivative
irrefragably adv.
Etymology
LL irrefragabilis (as IN-(1), refragari oppose)
ROGET THESAURUS
irrefragable
Demonstration
N demonstration, proof, rigorous proof, conclusiveness, apodeixis, apodixis, probation, comprobation, logic of facts, experimentum crucis, argument, rigorous establishment, absolute establishment, conviction, cogency, (persuasion), demonstrating, demonstrative, demonstrable, probative, unanswerable, conclusive, apodictic, apodeictic, apodeictical, irresistible, irrefutable, irrefragable, necessary, categorical, decisive, crucial, demonstrated, proven, unconfuted, unanswered, unrefuted, evident, deducible, consequential, consectary, inferential, following, convincing, cogent, persuasive (believable), of course, in consequence, consequently, as a matter of course, necessarily, of necessity, probatum est, there is nothing more to be said, quod est demonstrandum, Q, E, D, it must follow, exitus acta probat.For further exploring for "irrefragable" in Webster Dictionary Online