unmerciful
WordReference English Thesaurus © 2026
Synonyms:
merciless, pitiless, unpitying, vengeful, brutal, cruel Collocations, savage Collocations, bloodthirsty, tyrannous, monstrous, sanguine, inhumane, bestial, vindictive, cold-hearted, coldblooded, heartless, atrocious, stony-hearted, barbarous, brutish, callous Collocations, calloused, cold Collocations, cold of heart, dog-eat-dog, flint-hearted, flinty, hard Collocations, hard of heart, hardened, hardhearted, harsh Collocations, inclement, inexorable, insensitive Collocations, mean Collocations, obdurate, relentless Collocations, remorseless, ruthless Collocations, uncompassionate, unfeeling, unforgiving, unkind Collocations, unresponsive, unsparing, unsympathetic, unyielding, vicious Collocations, without mercy