VICIOUS
poisonous, venomous, vicious
(adjective) marked by deep ill will; deliberately harmful; “poisonous hate”; “venomous criticism”; “vicious gossip”
barbarous, brutal, cruel, fell, roughshod, savage, vicious
(adjective) (of persons or their actions) able or disposed to inflict pain or suffering; “a barbarous crime”; “brutal beatings”; “cruel tortures”; “Stalin’s roughshod treatment of the kulaks”; “a savage slap”; “vicious kicks”
condemnable, criminal, deplorable, reprehensible, vicious
(adjective) bringing or deserving severe rebuke or censure; “a criminal waste of talent”; “a deplorable act of violence”; “adultery is as reprehensible for a husband as for a wife”
evil, vicious
(adjective) having the nature of vice
Source: WordNet® 3.1
Etymology
Adjective
vicious (comparative viciouser or more vicious, superlative viciousest or most vicious)
Violent, destructive and cruel.
Savage and aggressive.
(archaic) Pertaining to vice; characterised by immorality or depravity.
Synonyms
• scathy
Etymology
Proper noun
Vicious
A surname.
Source: Wiktionary
Vi"cious, a. Etym: [OF. vicious, F. vicieux, fr. L. vitiosus, fr.
vitium vice. See Vice a fault.]
1. Characterized by vice or defects; defective; faulty; imperfect.
Though I perchance am vicious in my guess. Shak.
The title of these lords was vicious in its origin. Burke.
A charge against Bentley of vicious reasoning. De Quincey.
2. Addicted to vice; corrupt in principles or conduct; depraved;
wicked; as, vicious children; vicious examples; vicious conduct.
Who . . . heard this heavy curse, Servant of servants, on his vicious
race. Milton.
3. Wanting purity; foul; bad; noxious; as, vicious air, water, etc.
Dryden.
4. Not correct or pure; corrupt; as, vicious language; vicious
idioms.
5. Not well tamed or broken; given to bad tricks; unruly; refractory;
as, a vicious horse.
6. Bitter; spiteful; malignant. [Colloq.]
Syn.
– Corrupt; faulty; wicked; depraved.
– Vi"cious*ly, adv.
– Vi"cious*ness, n.
Source: Webster’s Unabridged Dictionary 1913 Edition