1. (adj.)vicious addicted to or characterized by vice; immoral or evil; depraved.
2. vicious spiteful; malicious: vicious gossip.
3. vicious unpleasantly severe or intense: a vicious headache.
4. vicious savage; ferocious: a vicious temper.
5. vicious (of an animal) unruly, fierce, or of a violent disposition.
6. vicious characterized by faults or defects; unsound: vicious reasoning.
7. vicious morbid, foul, or noxious.
Etymology: (1300–50; < L vitiōsus, der. of viti(um) fault, vice1)
Definition of 'vicious'
Princeton's WordNet
1. (adj)barbarous, brutal, cruel, fell, roughshod, savage, vicious (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"
3. (adj)condemnable, criminal, deplorable, reprehensible, vicious 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"
4. (adj)poisonous, venomous, vicious marked by deep ill will; deliberately harmful "poisonous hate"; "venomous criticism"; "vicious gossip"
1. (adjective)vicious ≠ gentle a vicious attack; a breed of dog that can be vicious
2. vicious unkind and causingharm vicious comments; a vicious rumor; He was viciously attacked by two masked men.; Her opponent criticized her viciously.
Definition of 'vicious'
Webster Dictionary
1. (adj)vicious characterized by vice or defects; defective; faulty; imperfect
2. (adj)vicious addicted to vice; corrupt in principles or conduct; depraved; wicked; as, vicious children; vicious examples; vicious conduct
2. To give up lying. (A word taken from the Zynrxi, and first used by the French at the Siege of Paris to describe the Germans; hence, any one who does anything impolite or acts in any way strictly in accordance with his innate tastes.)
Definitions of vicious 
Afrikaans: moordlustig
Arabic: قاسٍ، شِرّير، مُحْتَمَل أ
Bulgarian: злобен
Brazilian: mau
Czech: zlý, útočný
German: bösartig
Danish: ondskabsfuld
Greek: κακός, μοχθηρός, άγριος, 
Spanish: cruel, malintencionado
Estonian: tige
Farsi: بدجنس؛ بی رحم
Finnish: häijy
French: méchant
Hebrew: אַכזָרִי
Hindi: दुराचारी
Croatian: zao, loše naravi
Hungarian: gonosz, rosszindulatú, ha
Indonesian: galak
Icelandic: illviljaður; grimmur
Italian: cattivo
Japanese: 邪悪な
Korean: 악덕의
Lithuanian: piktas, niršus
Latvian: nikns;ļauns
Malay: kejam
Dutch: wreed, gemeen
Norwegian: krakilsk, ustyrlig, ondsk
Polish: zły, złośliwy
Portuguese: mau
Romanian: rău
Russian: злобный
Slovak: zlý, útočný
Slovenian: hudoben
Serbian: opasan
Swedish: elak, ond, ilsken
Thai: ที่ดุร้าย (ใช้กับสัตว์)
Turkish: zalim, acımasız, kötü
Taiwanese: 惡意的，兇惡的
Ukrainian: злий, злобний
Urdu: بدمعاش، برا، بے رحم
Vietnamese: xấu xa, đầy ác ý
Chinese: 凶恶的
