[1] : WordNet (r) 2.0

sadistic
     adj : deriving pleasure or sexual gratification from inflicting
           pain on another ant: masochistic
see also:
masochistic 

[2] : Moby Thesaurus II by Grady Ward, 1.0

50 moby thesaurus words for "sadistic":
   draconian, tartarean, animal, anthropophagous, atrocious, barbaric,
   barbarous, beastly, bestial, bloodthirsty, bloody, bloody-minded,
   brutal, brutalized, brute, brutish, cannibalistic, cruel,
   cruel-hearted, demoniac, demoniacal, devilish, diabolic, fell,
   feral, ferocious, fiendish, fiendlike, fierce, hellish, infernal,
   inhuman, inhumane, monstrous, murderous, perverse, ruthless,
   sanguinary, sanguineous, satanic, savage, sharkish, slavering,
   subhuman, truculent, unchristian, uncivilized, unhuman, vicious,
   wolfish

Sadistic >> S Words
Sadistic, definition of term: Sadistic
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