The Collaborative International Dictionary of English v.0.48:

Affability \Af`fa*bil"i*ty\, n. [L. affabilitas: cf. F.
   affabilit['e].]
   The quality of being affable; readiness to converse;
   courteousness in receiving others and in conversation;
   complaisant behavior.
   [1913 Webster]

         Affability is of a wonderful efficacy or power in
         procuring love.                          --Elyot
   [1913 Webster]

WordNet (r) 3.0 (2006):

affability
    n 1: a disposition to be friendly and approachable (easy to talk
         to) [syn: affability, affableness, amiability,
         amiableness, bonhomie, geniality]