Synonyms of ruthless in English:

ruthless


See definition of ruthless

adjective

1‘a ruthless killer’

SYNONYMS
merciless, pitiless, cruel, heartless, hard-hearted, hard, stony-hearted, stony, with a heart of stone, cold-blooded, cold-hearted, harsh, callous, severe, unmerciful, unrelenting, unsparing, unforgiving, unfeeling, uncaring, unsympathetic, uncharitable, lacking compassion
relentless, remorseless, unbending, inflexible, inexorable, implacable, unpitying, unremitting, steely
brutal, inhuman, inhumane, barbarous, barbaric, savage, bloodthirsty, sadistic, vicious, fierce, ferocious, cut-throat, dog-eat-dog
archaic inclement, fell
rare marble-hearted
ANTONYMS

merciful, compassionate, gentle