unrefutable
I
adjective
accurate, certain, demonstrated, doubtless, factual, inappealable, incontestable, incontrovertible, indisputable, indubitable, irrefragable, irrefutable, positive, proved, proven, sure, true, unanswerable, unconfutable, uncontroversial, undeniable, unequivocal, unimpeachable, unquestionable, valid, veracious, veritable
II
index
clear (certain), convincing, inappealable, positive (incontestable), solid (sound), unimpeachable
Burton's Legal Thesaurus.
William C. Burton.
2006