The Collaborative International Dictionary of English v.0.48:

Lustful \Lust"ful\, a.
   1. Full of lust; excited by lust. --Spenser. --Tillotson.
      [1913 Webster]

   2. Exciting lust; characterized by lust or sensuality. "
      Lustful orgies." --Milton.
      [1913 Webster]

   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.
        [1913 Webster]

WordNet (r) 3.0 (2006):

lustful
    adj 1: characterized by lust; "eluding the lubricious embraces
           of her employer"; "her sensuous grace roused his lustful
           nature"; "prurient literature"; "prurient thoughts"; "a
           salacious rooster of a little man" [syn: lubricious,
           lustful, prurient, salacious]
    2: driven by lust; preoccupied with or exhibiting lustful
       desires; "libidinous orgies" [syn: lascivious, lewd,
       libidinous, lustful]
    3: vigorously passionate [syn: lustful, lusty,
       concupiscent]

Moby Thesaurus II by Grady Ward, 1.0:

63 Moby Thesaurus words for "lustful":
   animal, aphrodisiomaniacal, appetitive, bawdy, burning, carnal,
   clitoromaniacal, concupiscent, desiderative, desireful, desiring,
   desirous, dirty, eager, ejaculatory, erotic, eroticomaniacal,
   erotomaniacal, fast, fleshly, goatish, gynecomaniacal, hoping,
   hormic, horny, hot, hot-blooded, hysteromaniacal, incontinent,
   itching, ithyphallic, lascivious, lecherous, lewd, libertine,
   libidinal, libidinous, licentious, lickerish, lubricious, needing,
   nymphomaniacal, obscene, optative, orgasmic, orgastic, passionate,
   priapic, prurient, randy, ruttish, rutty, salacious, satyric,
   sensual, sex-starved, sexual, sexy, steamy, tempted, unsatisfied,
   wanting, wishing