merciless, pitiless, unpitying, vengeful, brutal, cruel, savage, bloodthirsty, tyrannous, monstrous, sanguine, inhumane, bestial, vindictive, ravening, cold-hearted, coldblooded, heartless, atrocious, dead to human feeling, stony-hearted.
"unmerciful." YourDictionary, n.d. Web. 12 October 2018. <http://thesaurus.yourdictionary.com/unmerciful>.
unmerciful. (n.d.). Retrieved October 12th, 2018, from http://thesaurus.yourdictionary.com/unmerciful
Having or showing no mercy:
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