unequivocal

Synonyms: absolute apparent categorical certain clear clear-cut decided decisive direct distinct downright evident explicit flat out incontestable incontrovertible indisputable indubitable manifest no catch no fine print no holds barred no ifs ands or buts no strings attached obvious open and shut palpable patent plain straight straightforward straight out unambiguous uncontestable undeniable undisputable univocal unmistakable unquestionable

Antonyms: ambiguous equivocal indefinite obscured uncertain unsure vague