merciless Synonyms

unmerciful cruel ruthless pitiless remorseless savage barbarous uncircumcised uncompromising unfeeling unkind unkindly vengeful unsparing unrelenting uncharitable unamiable sanguinary severe steely stern stony tigerish tyrannical tyrannous vicious vindictive unforgiving inhumane sadomasochistic uncaring stony-hearted stonyhearted unabated uncompassionate unsympathetic unsympathising hard-boiled sadistic wanton wicked wreakful unyielding unpitying untamed unappeasable barbaric bare-knuckle heavy-handed unsympathizing