genuine synonyms

good whole certain true sound natural original official positive proved actual substantial confirmed plain absolute pure accurate precise tested exact valid sterling legitimate authentic factual literal certified verified ascertained veritable palpable indisputable demonstrable undisguised authenticated unadulterated unquestionable unimpeachable unmixed unerring unalloyed unvarnished pukka bona fide

known real frank honest reliable straightforward definite manifest unaffected staunch forthright candid trustworthy heartfelt incontrovertible ingenuous unfeigned