acknowledged recognized or made known or admitted; "the acknowledged leader of the community"; "a woman of acknowledged accomplishments"; "his acknowledged error"
for sure not open to doubt; "she wanted to go; that was for sure"
mathematical characterized by the exactness or precision of mathematics; "mathematical precision"
unquestionable -
not open to question; "an unquestionable (or unequivocal) loss of prestige"
univocal,
unambiguous,
unequivocal having or exhibiting a single clearly defined meaning; "As a horror, apartheid...is absolutely unambiguous"- Mario Vargas Llosa
unquestionable -
not counterfeit or copied; "an authentic signature"; "a bona fide manuscript"; "an unquestionable antique"; "photographs taken in a veritable bull ring"
