D defs.my
Entry 2 senses Webster, 1913

Authenticity

/ôthˌ-ən-tĭs'-ĭt-ē/ · Au·then·tic·i·ty · IPA /ɑθɛnˈtɪsɪti/
01 n. The quality of being authentic or of established authority for truth and correctness.
  1. 1.
    The quality of being authentic or of established authority for truth and correctness.
  2. 2.
    Genuineness; the quality of being genuine or not corrupted from the original.