Synonyms and related words :
Draconian, Tartarean, animal, anthropophagous, atheist, atheistic, atrocious, barbaric, barbarous, beastly, bestial, bloodthirsty, bloody, bloody-minded, brutal, brutalized, brute, brutish, cannibalistic, cruel, cruel-hearted, demoniac, demoniacal, devilish, diabolic, disbelieving, faithless, fell, feral, ferocious, fiendish, fiendlike, fierce, gentile, godless, goyish, heathen, hellish, impious, infernal, infidel, infidelic, inhuman, inhumane, irreligious, minimifidian, misbelieving, murderous, non-Christian, non-Jewish, non-Mohammedan, non-Mormon, non-Moslem, non-Muhammadan, non-Muslim, nullifidian, pagan, ruthless, sadistic, sanguinary, sanguineous, satanic, savage, sharkish, sinful, slavering, subhuman, truculent, un-Christly, unangelic, unbelieving, uncircumcised, uncivilized, unconscionable, ungodly, unholy, unhuman, unrighteous, unsaintly, vicious, wicked, wolfish