ruthless
/ˈruːθləs
/adjective
Having or showing no pity or compassion for others: a ruthless manipulator...
- Not that people had much choice in the matter - bandits were ruthless and bloodthirsty.
- He is known as a fierce and ruthless executive within his film production company, CWP.
- You are being so bloodthirsty, so ruthless, and you are much too strong for your age and training.
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
Origin
Middle English: from ruth + -less.