Meaning of VICIOUS in English

VICIOUS

adj.1 bad-tempered, spiteful (a vicious dog; vicious remarks).

2 violent, severe (a vicious attack).

3 of the nature of or addicted to vice.

4 (of language or reasoning etc.) faulty or unsound.

Phrases and idioms:

vicious circle see CIRCLE n. 11. vicious spiral continual harmful interaction of causes and effects, esp. as causing repeated rises in both prices and wages.

Derivatives:

viciously adv. viciousness n.

Etymology: ME f. OF vicious or L vitiosus f. vitium VICE(1)

Oxford English vocab.      Оксфордский английский словарь.