Irrefragable vs. Unquestionable

Irrefragableadjective

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

Unquestionableadjective

undeniable, obvious

Irrefragableadjective

(archaic) Which cannot or should not be broken; indestructible.

Unquestionableadjective

Not questionable; as, an unquestionable title.

Irrefragableadjective

(obsolete) Of a person: obstinate, stubborn.

Unquestionableadjective

Not inviting questions or conversation.

Irrefragableadjective

Not refragable; not to be gainsaid or denied; not to be refuted or overthrown; irrefutable; unanswerable; incontestable; undeniable; as, an irrefragable argument; irrefragable evidence.

Unquestionableadjective

impossible to question;

‘unquestionable authority’;

Unquestionableadjective

not counterfeit or copied;

‘an authentic signature’; ‘a bona fide manuscript’; ‘an unquestionable antique’; ‘photographs taken in a veritable bull ring’;

Unquestionableadjective

not open to question;

‘an unquestionable (or unequivocal) loss of prestige’;