The Collaborative International Dictionary of English v.0.48:

Salacious \Sa*la"cious\, n. [L. salax, -acis, fond of leaping,
   lustful, fr. salire to leap. See Salient.]
   Having a propensity to venery; lustful; lecherous. --Dryden.
   [1913 Webster] -- Sa*la"cious*ly, adv. --
   Sa*la"cious*ness, n.
   [1913 Webster]

WordNet (r) 3.0 (2006):

salaciousness
    n 1: the trait of behaving in an obscene manner [syn:
         obscenity, lewdness, bawdiness, salaciousness,
         salacity]