'kill crazy' definitions:
- atrocious,
- barbaric,
- barbarous,
- bestial,
- bloody,
- brutal,
- brutish,
- feral,
- ferine,
- ferocious,
- fierce,
- inhuman,
- malign,
- malignant,
- merciless,
- murderous,
- noncivilized,
- pitiless,
- ruthless,
- sanguinary,
- savage,
- tameless,
- uncivilized,
- ungentle,
- untamed,
- vicious,
- wild
