without pity

barbarous brutal callous cold-blooded cruel cutthroat ferocious fierce harsh inhuman malevolent merciless rancorous relentless sadistic savage unforgiving unrelenting unyielding vicious vindictive

adamant cold dog-eat-dog feral grim hard hard-hearted implacable inexorable ironfisted killer mortal obdurate pitiless remorseless revengeful severe stern stony surly unappeasable unfeeling unmerciful unsympathetic

calm civilized compassionate easy feeling flexible forgiving friendly gentle humane kind merciful mild nice nonviolent peaceful polite sympathetic tame tender

considerate giving