Word Study
unmerciful
CIDE DICTIONARY
unmerciful, a.
Not merciful; indisposed to mercy or grace; cruel; inhuman; merciless; unkind. [1913 Webster]
THESAURUS
unmerciful
barbarous, bowelless, brutal, brutish, callous, calloused, cold, cold of heart, coldblooded, coldhearted, cruel, dog-eat-dog, flinthearted, flinty, hard, hard of heart, hardened, hardhearted, harsh, heartless, inclement, inexorable, insensitive, mean, merciless, obdurate, pitiless, relentless, remorseless, ruthless, savage, stonyhearted, uncompassionate, uncompassioned, unfeeling, unforgiving, unkind, unnatural, unpitiful, unpitying, unremorseful, unresponsive, unsparing, unsympathetic, unsympathizing, unyielding, vicious, without mercyROGET THESAURUS
unmerciful
Pitilessness
N pitilessness, inclemency, severity, malevolence, pitiless, merciless, ruthless, bowelless, unpitying, unmerciful, inclement, grim-faced, grim-visaged, incompassionate, uncompassionate, inexorable, harsh, unrelenting.For further exploring for "unmerciful" in Webster Dictionary Online