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English definition of “vicious”

vicious

adjective uk   /ˈvɪʃ.əs/ us  
C2 describes people or actions that show an intention or wish to hurt someone or something very badly: a vicious thug a vicious dog The police said that this was one of the most vicious attacks they'd ever seen. He gave her a vicious look.Violent or aggressiveUnkind, cruel and unfeelingTreating people or animals badly C2 describes an object, condition, or remark that causes great physical or emotional pain: a large collection of vicious medieval torture instruments I've got a vicious headache. Make sure you wrap up warmly - there's a vicious (= extremely strong and unpleasant) wind out there. a vicious lie/accusation/rumourViolent or aggressiveUnkind, cruel and unfeelingTreating people or animals badly
viciously
adverb uk   /-li/ us  
Violent or aggressiveUnkind, cruel and unfeelingTreating people or animals badly
viciousness
noun [U] uk   /-nəs/ us  
Violent or aggressiveUnkind, cruel and unfeelingTreating people or animals badly
(Definition of vicious from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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