形容詞 vicious:

1. (of persons or their actions) able or disposed to inflict pain or suffering
   同義詞：barbarous, brutal, cruel, fell, roughshod, savage
2. having the nature of vice
   同義詞：evil
3. bringing or deserving severe rebuke or censure
   同義詞：condemnable, criminal, deplorable, reprehensible
4. marked by deep ill will; deliberately harmful
   同義詞：poisonous, venomous

1. The people are held down by a vicious and repressive military regime.
   人民受著兇惡而專制的軍政權(quán)的壓迫。
2. Let go of me, you vicious monster!
   放開我，你這可惡的家伙！
3. The editor got his claws into the opposition in a vicious editorial.
   那個編輯在一篇社論中惡毒地攻擊了反對派。
4. Your vicious dog is menacing my cat!
   你那條惡狗對我家的貓?zhí)珒戳耍?/div>
5. He led a vicious life.
   他過著一種墮落的生活。
6. He gave the dog a vicious blow with his stick.
   他用手杖惡狠狠地打了那條狗一頓。

vi.cious

adj.（形容詞）
Having the nature of vice; evil, immoral, or depraved.
邪惡的：具有邪惡的本質(zhì)的；惡毒的、不道德的或者墮落的
Given to vice, immorality, or depravity.
品行不良的：邪惡的、不道德的或者墮落的
Spiteful; malicious:
可惡的；有惡意的：
例句：
vicious gossip.
惡意中傷的閑話

Disposed to or characterized by violent or destructive behavior.See Synonyms at cruel
兇殘的或者惡毒的：傾向于殘忍或破壞性行為的或以此為特點的參見 cruel
Marked by an aggressive disposition; savage. Used chiefly of animals.
兇猛的：以侵略性為特點的；野蠻的。主要用于動物
Faulty, imperfect, or otherwise impaired by defects or a defect:
有缺點的：有缺點的、有瑕疵的或被瑕疵破壞的：
例句：
a forced, vicious style of prose.
不自然且有缺點的韻文

Impure; foul.
不純潔；惡臭的

來源：
Middle English
中古英語
from Old French vicieus
源自 古法語 vicieus
from Latin vitiôsus
源自 拉丁語 vitiôsus
from vitium [vice]
源自 vitium [惡行]

【引伸】
vi.ciously
adv.（副詞）
vi.ciousness
n.（名詞）