irrefragable

Impossible to refute or controvert; indisputable.

Not refragable; incapable of being broken down or refuted; incontrovertible; undeniable; not confutable: as, an irrefragable argument; irrefragable evidence; an irrefragable opponent.

Synonyms Unanswerable, indisputable, unquestionable, indubitable, irrefutable.

Not refragable; not to be gainsaid or denied; not to be refuted or overthrown; irrefutable; unanswerable; incontestable; undeniable

Which cannot be refuted; indisputable, clearly right, incontrovertible.