Meaning of VICIOUS in English

VICIOUS

/ ˈvɪʃəs; NAmE / adjective

1.

violent and cruel

SYN brutal :

a vicious attack

a vicious criminal

She has a vicious temper.

2.

( of animals ) aggressive and dangerous :

a vicious dog

3.

( of an attack, criticism, etc. ) full of hatred and anger :

She wrote me a vicious letter.

4.

( informal ) very bad or severe :

a vicious headache

a vicious spiral of rising prices

►  vi·cious·ly adverb

►  vi·cious·ness noun [ U ]:

Police were shocked by the viciousness of the assault.

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WORD ORIGIN

Middle English (in the sense characterized by immorality ): from Old French vicious or Latin vitiosus , from vitium vice.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.