Synonyms:
- 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