Synonyms of vicious in English:

vicious


See definition of vicious

adjective

1‘there was a vicious killer at large’

SYNONYMS
brutal, ferocious, savage, violent, dangerous, ruthless, remorseless, merciless, heartless, callous, cruel, harsh, cold-blooded, inhuman, fierce, barbarous, barbaric, brutish, bestial, bloodthirsty, bloody, fiendish, sadistic, monstrous, villainous, murderous, homicidal, heinous, atrocious, diabolical, terrible, dreadful, awful, grim
British informal beastly
archaic fell, sanguinary
ANTONYMS

gentle

2‘the MP was the victim of a vicious hate campaign’

SYNONYMS
malicious, malevolent, malignant, malign, spiteful, vindictive, venomous, poisonous, baleful, virulent, pernicious, backbiting, rancorous, caustic, mean, cruel, bitter, acrimonious, hostile, hate-filled, menacing, nasty, unpleasant, evil
defamatory, slanderous
informal bitchy, catty
literary malefic, maleficent
ANTONYMS

kindly, benevolent