(a.) Merciless; cruel; pitiless\.

Draconian Tartarean animal anthropophagous atrocious barbaric barbarous beastly bestial bloodthirsty bloody bloody-minded bowelless brutal brutalized brute brutish callous cannibalistic cruel cruel-hearted demoniac demoniacal devilish diabolic dog-eat-dog fell feral ferine ferocious fiendish fiendlike fierce flinty hard harsh heartless hellish implacable inclement inexorable infernal inhuman inhumane kill-crazy malign malignant mean merciless mortal murderous noncivilized pitiless relentless remorseless sadistic sanguinary sanguineous satanic savage severe sharkish slavering subhuman tameless tough truculent unappeasable unchristian uncivilized uncompassionate uncompassioned unfeeling unflinching unforgiving ungentle unhuman unmerciful unpitiful unpitying unrelenting unremorseful unsympathetic unsympathizing untamed unyielding vicious wild without mercy wolfish