Synonyms of authentic

1 Syllable

pure, reals, truest, sure, truer, true, real

2 Syllables

purest, verier, factual, certain, realer, purer, honest, actuals, valid, trusty, washer, veriest, faithful, first-hand, trustier, legit, actual, for-sure, sure-thing, very, realest

3 Syllables

credible, reliable, trustable, undoubted, watertight, convincing, unmingled, trustworthy, official, sure-enough, literal, archival, unfaked

4 Syllables

believable, surefire, lifelike, underived, unrefuted, accurate, creditable, historical, veritable, above-board, undeviating, veridical, wholehearted, dependable, honest-to-god, really-truly, original, originals

5 Syllables

ultraprecise, legitimate, circumstantiated, uncontestable, unquestionable

6 Syllables

underivative, authoritative, incontrovertible, unsophisticated, representational, unexaggerated