Authenticity1. (n.) Genuineness; originality; authority for truth and correctness.
2. (n.) Genuineness; the quality of being genuine or not corrupted from the original.
Thesaurus Entries
absolute realism, accomplished fact, actuality, artlessness, authoritativeness, bona fideness, calculability, canonicalness, canonicity, creativeness, creativity, dependability, factuality, fait accompli, faithworthiness, firmness, freshness, genuineness, gospel truth, grim reality, historicity, honesty, inartificiality, innovation, inventiveness, invincibility, legitimacy, lifelikeness, literalism, literality, literalness, naturalism, naturalness, newness, nonimitation, not a dream, novelty, objective existence, originality, orthodoxicalness, orthodoxism, orthodoxness, orthodoxy, photographic realism, predictability, realism, reality, realness, reliability, religious truth, right belief, rightness, secureness, security, sincerity, solidity, soundness, stability, staunchness, steadfastness, steadiness, substantiality, the truth, traditionalism, true-to-lifeness, trustworthiness, truth, truth to nature, unadulteration, unaffectedness, unerringness, unfictitiousness, uniqueness, unspeciousness, unspuriousness, unsyntheticness, validity, verisimilitude