vicious

adjective

vi·​cious ˈvi-shəs How to pronounce vicious (audio)
Synonyms of vicious
1
a
: dangerously aggressive : savage
a vicious dog
b
: marked by violence or ferocity : fierce
a vicious fight
2
: malicious, spiteful
vicious gossip
3
: worsened by internal causes that reciprocally augment each other
a vicious wage-price spiral
4
: having the nature or quality of vice or immorality : depraved
5
6
viciously adverb
viciousness noun
Choose the Right Synonym for vicious

vicious, villainous, iniquitous, nefarious, corrupt, degenerate mean highly reprehensible or offensive in character, nature, or conduct.

vicious may directly oppose virtuous in implying moral depravity, or may connote malignancy, cruelty, or destructive violence.

a vicious gangster

villainous applies to any evil, depraved, or vile conduct or characteristic.

a villainous assault

iniquitous implies absence of all signs of justice or fairness.

an iniquitous system of taxation

nefarious suggests flagrant breaching of time-honored laws and traditions of conduct.

the nefarious rackets of organized crime

corrupt stresses a loss of moral integrity or probity causing betrayal of principle or sworn obligations.

city hall was rife with corrupt politicians

degenerate suggests having sunk to an especially vicious or enervated condition.

a degenerate regime propped up by foreign powers

Examples of vicious in a Sentence

Challenging areas of social consensus, however dumb or even vicious the consensus, is largely off limits for the media, because it wins no friends among the general public. Richard A. Posner, New York Times Book Review, 31 July 2005
The genetically vicious nature of presidential campaigns in America is too obvious to argue with, but some people call it fun, and I am one of them. Dr. Hunter S. Thompson, Rolling Stone, 11 Nov. 2004
True to Finals form, this hardwood battle has become as vicious as any street scrum. Anne Marie Cruz, ESPN, 24 June 2002
For most of my life I have retained a haunting image from an old Tarzan movie: piranhas, those vicious little fish with the arrowhead-shaped teeth, devouring a pig. Forget that there are no piranha in Africa. But they do exist in Brazil, in abundance in the meandering waterways of the Amazon Basin. Gerald Eskenazi, New York Times, 6 Oct. 2002
The Olympics always seemed too much like war, vicious old men manipulating youngsters hungry for fame into performing heroic acts for short change. Robert Lipsyte, New York Times, 29 July 2001
His slider—a vicious, hard-breaking pitch with which he finished off right-handed hitters for years—was inconsistent and benign, and the velocity of his fastball was diminished. Buster Olney, New York Times Magazine, 4 Mar. 2001
a vicious tone of voice I know you're upset with her, but there's no need to be vicious.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
As an adult, Aemond is vicious, tactical and easily identifiable by wearing an eye patch over a blue glass ball where his eye used to be. Skyler Trepel, PEOPLE, 22 June 2026 Fighting between rebel groups The election comes 10 years after Colombia signed a historic peace pact with guerrillas of the Revolutionary Armed Forces of Colombia, or FARC, that had offered hope to break the nation’s vicious cycle of fighting between rebel groups and the government. Regina Garcia Cano, Los Angeles Times, 21 June 2026 Lajae Jones, wing, 6-7, Florida State A wing with good size (6-6 3/4 in socks) and a solid frame, Jones is a good athlete who threw down some vicious dunks. John Hollinger, New York Times, 20 June 2026 The story follows vicious ex-con, Max Cady (Bardem) and his revenge plot against married couple Tom (Patrick Wilson) and Anna Bowden (Adams). Erik Kain, Forbes.com, 19 June 2026 See All Example Sentences for vicious

Word History

Etymology

Middle English, from Anglo-French vicios, from Latin vitiosus full of faults, corrupt, from vitium vice

First Known Use

14th century, in the meaning defined at sense 4

Time Traveler
The first known use of vicious was in the 14th century

Browse Nearby Words

Cite this Entry

“Vicious.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vicious. Accessed 24 Jun. 2026.

Kids Definition

vicious

adjective
vi·​cious ˈvish-əs How to pronounce vicious (audio)
1
a
: likely to do evil : wicked
b
: of the nature of evil : immoral
2
: very dangerous
a vicious dog
3
: having or showing hateful feelings
vicious gossip
viciously adverb
viciousness noun

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