Synonyms of ruthlessness

2 Syllables
cruelties, rancors, cruelty, rancor
3 Syllables
callousness, violence, revenged, revenging, barbarism, heartlessness, brutishness, counterplay, avengment, revenge, viciousness
4 Syllables
barbarities, cold-bloodedness, savagery, ferocity, bloodthirstiness, mercilessness, maliciousness, savageness, brutalities, hard-heartedness, barbarity, vengefulness, atrocity, brutality
5 Syllables
inhumanity, revengefulness, inhumanities
6 Syllables
counterinsurgencies, insensitiveness, uncharitableness, counterinsurgency