kindhearted Antonyms

merciless spiteful stockish stone-hearted tameless tigerish tough truculent unbenign uncharitable unfeeling unfriendly unhuman severe scornful savage mummified murderous nasty obdurate pachydermatous paroxysmal petulant pitiless revengeful roughshod ruthless sanguineous unkind unkindly vengeful hard-boiled narcissistic antihumanitarian inhumane self-absorbed uncaring unsentimental stonyhearted uncompassionate unemotional unsympathetic unsympathizing case-hardened sadistic calloused vicious virulent vixenish wanton