authenticity

truly; verily, indeed, in reality; with truth (veracity); certainly (certain); actually (existence); in effect (intrinsically)., exactly; ad amussim; verbatim, verbatim et literatim; word for word, literally, literatim, totidem vervis, sic, to the letter, chapter and verse, ipsissimis verbis; ad unguem; to an inch; to a nicety, to a hair, to a tittle, to a turn, to a T; au pied de la lettre; neither more nor less; in every respect, in all respects; sous tous les rapports; at any rate, at all events; strictly speaking.