Bestial \Bes"tial\, a. [F. bestial, L. bestialis, fr. bestia
   beast. See {Beast}.]
   1. Belonging to a beast, or to the class of beasts.
      
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            Among the bestial herds to range.     --Milton.
      
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   2. Having the qualities of a beast; brutal; below the dignity
      of reason or humanity; irrational; carnal; beastly;
      sensual. --Shak.
      
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   Syn: Brutish; beastly; brutal; carnal; vile; low; depraved;
        sensual; filthy.
        
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Bestial \Bes"tial\, n.
   A domestic animal; also collectively, cattle; as, other kinds
   of bestial. [Scot.]
   
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bestial
     adj : resembling a beast; showing lack of human sensibility;
           "beastly desires"; "a bestial nature"; "brute force";
           "a dull and brutish man"; "bestial treatment of
           prisoners" [syn: {beastly}, {brute(a)}, {brutish}]

109 Moby Thesaurus words for "bestial":
   Adamic, Circean, Draconian, Gothic, Neanderthal, Tartarean, animal,
   animalian, animalic, animalistic, anthropophagous, atrocious,
   barbarian, barbaric, barbarous, beastlike, beastly, bloodthirsty,
   bloody, bloody-minded, bodily, brutal, brutalized, brute,
   brutelike, brutish, cannibalistic, carnal, carnal-minded, coarse,
   cruel, cruel-hearted, demoniac, demoniacal, devilish, diabolic,
   dumb, earthy, fallen, fell, feral, ferine, ferocious, fiendish,
   fiendlike, fierce, fleshly, gross, hellish, ill-bred, impolite,
   infernal, inhuman, inhumane, instinctive, instinctual, kill-crazy,
   lapsed, malign, malignant, material, materialistic, merciless,
   mindless, murderous, noncivilized, nonrational, nonspiritual,
   orgiastic, outlandish, physical, pitiless, postlapsarian,
   primitive, rough-and-ready, ruthless, sadistic, sanguinary,
   sanguineous, satanic, savage, sharkish, slavering, subhuman,
   swinish, tameless, troglodytic, truculent, unchristian, uncivil,
   uncivilized, uncombed, uncouth, uncultivated, uncultured, ungentle,
   unhuman, unkempt, unlicked, unpolished, unrefined, unspiritual,
   untamed, vicious, wild, wolfish, zoic, zooidal, zoologic