heartless Synonyms

hardhearted relentless unconcerned unfeeling unhuman unkind unmerciful unsparing vicious virtueless unpitying uncharitable unamiable remorseless ruthless savage severe soulless steely stony thick-skinned tough tyrannous unsusceptible unimpassioned uncaring unsentimental stony-hearted stonyhearted uncompassionate unimpressionable unsoldierly unstirred unsympathetic inhumane aversive coldhearted barbaric heavy-handed heartstrings unloving calloused sadistic case-hardened hard-boiled unforgiving unsympathizing raptorious barbarous ferocious