ruthless Synonyms

pitiless remorseless cold-blooded cruel merciless savage heartless unpitying unsparing unfeeling inexorable uncompassionate unforgiving brutal barbarous relentless algolagnic uncompromising uncharitable tyrannical unbending severe soulless unamiable tyrannous stone-cold steely strict stringent tigerish tough stark stern unhuman unkind sadistic hard-boiled stonyhearted hardhearted inhumane sadomasochistic uncaring unstoppable undemocratic unsympathetic machiavellian heavy-handed unmerciful unrelenting vicious