Source : Webster's Revised Unabridged Dictionary (1913)

Lustful \Lust"ful\, a.
   1. Full of lust; excited by lust. --Spenser. --Tillotson.

   2. Exciting lust; characterized by lust or sensuality. ``
      Lustful orgies.'' --Milton.

   3. Strong; lusty. [Obs.] `` Lustful health.'' --Sackville.

   Syn: sensual; fleshly; carnal; inordinate; licentious; lewd;
        unchaste; impure; libidinous; lecherous. --
        {Lust"ful*ly}, adv. -- {Lust"ful*ness}, n.

Source : WordNet®

lustfully
     adv : in a lustful manner; "he looked at the young woman
           lustfully"