The Collaborative International Dictionary of English v.0.48:

Sauciness \Sau"ci*ness\, n.
   The quality or state of being saucy; that which is saucy;
   impertinent boldness; contempt of superiors; impudence.
   [1913 Webster]

         Your sauciness will jest upon my love.   --Shak.
   [1913 Webster]

   Syn: Impudence; impertinence; rudeness; insolence. See
        Impudence.
        [1913 Webster] Saucisson

WordNet (r) 3.0 (2006):

sauciness
    n 1: inappropriate playfulness [syn: impertinence,
         perkiness, pertness, sauciness, archness]