authenticity

Meanings

1. 1
   noun

   The quality of being genuine or not corrupted from the original, of having the same origin (or attribution, commitment, intention, etc.) as claimed.

   I hereby certify the authenticity of this copy.

2. 2
   noun

   undisputed credibility

3. 3
   noun

   The quality of being authentic (of established authority).

Etymology

From authentic + -ity.