AUTHENTICITY /ɑθənˈtɪsɪti/ Scrabble 20 Words With Friends 21 Definition noun undisputed credibility. — synonyms: genuineness, legitimacy Examples “I hereby certify the authenticity of this copy.”“The authenticity of this painting is questionable.” See all 307 words you can make from AUTHENTICITY → 12-letter words Words starting with A Words ending with Y ← Unscramble different letters