Unmerciful

Adjective

 * 1) not showing mercy

Synonyms

 * merciless

Antonyms

 * merciful

Adverbs for Unmerciful
cruelly; coldly; miserably; hatefully; inflexibly; stubbornly; boorishly; brutally; selfishly; unyieldingly; dreadfully; intractably; shamefully; scandalously; wickedly; immovably; sternly; inscrutably; mysteriously; strangely; significantly; remarkably; unwontedly; unaccountably; oddly; surprisingly.

Thesaurus
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 mercy