VICIOUS Synonyms: 397 Similar and Opposite Words

Q: How does the adjective 'vicious' differ from other similar words?

Some common synonyms of vicious are corrupt , degenerate , iniquitous , nefarious , and villainous . While all these words 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

Q: Where would 'corrupt' be a reasonable alternative to 'vicious'?

The synonyms corrupt and vicious are sometimes interchangeable, but corrupt stresses a loss of moral integrity or probity causing betrayal of principle or sworn obligations. // city hall was rife with corrupt politicians

Q: In what contexts can 'degenerate' take the place of 'vicious'?

The words degenerate and vicious can be used in similar contexts, but degenerate suggests having sunk to an especially vicious or enervated condition. // a degenerate regime propped up by foreign powers

Q: When could 'iniquitous' be used to replace 'vicious'?

While in some cases nearly identical to vicious , iniquitous implies absence of all signs of justice or fairness. // an iniquitous system of taxation

Q: When can 'nefarious' be used instead of 'vicious'?

In some situations, the words nefarious and vicious are roughly equivalent. However, nefarious suggests flagrant breaching of time-honored laws and traditions of conduct. // the nefarious rackets of organized crime

Q: When is it sensible to use 'villainous' instead of 'vicious'?

Although the words villainous and vicious have much in common, villainous applies to any evil, depraved, or vile conduct or characteristic. // a villainous assault

vicious

adjective

ˈvi-shəs

Definition of vicious

as in intense

extreme in degree, power, or effect a vicious winter storm ripped through the region

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as in brutal

having or showing the desire to inflict severe pain and suffering on others she made a vicious effort to destroy the lives of the people who had wronged her

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as in unlawful

not conforming to a high moral standard; morally unacceptable a truly vicious person detested by almost everyone

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as in savage

violently unfriendly or aggressive in disposition a vicious dog that has already bitten several people

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as in malicious

having or showing a desire to cause someone pain or suffering for the sheer enjoyment of it he spread vicious rumors about his ex-wife after their bitter divorce

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Synonym Chooser

How does the adjective vicious differ from other similar words?

Some common synonyms of vicious are corrupt, degenerate, iniquitous, nefarious, and villainous. While all these words 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

Where would corrupt be a reasonable alternative to vicious?

The synonyms corrupt and vicious are sometimes interchangeable, but corrupt stresses a loss of moral integrity or probity causing betrayal of principle or sworn obligations.

city hall was rife with corrupt politicians

In what contexts can degenerate take the place of vicious?

The words degenerate and vicious can be used in similar contexts, but degenerate suggests having sunk to an especially vicious or enervated condition.

a degenerate regime propped up by foreign powers

When could iniquitous be used to replace vicious?

While in some cases nearly identical to vicious, iniquitous implies absence of all signs of justice or fairness.

an iniquitous system of taxation

When can nefarious be used instead of vicious?

In some situations, the words nefarious and vicious are roughly equivalent. However, nefarious suggests flagrant breaching of time-honored laws and traditions of conduct.

the nefarious rackets of organized crime

When is it sensible to use villainous instead of vicious?

Although the words villainous and vicious have much in common, villainous applies to any evil, depraved, or vile conduct or characteristic.

a villainous assault

Example Sentences

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.

Recent Examples of vicious So too, the possibility of Rollerball-style carnage carnivals where robots compete in vicious cage matches until only one android is still moving. — Rick Burton, Sportico.com, 19 Oct. 2026 Cash reserves totaling $ 7,450,869 are being used to eviscerate his opponent with a vicious barrage of ad hominem assaults, thus giving him a 61 to 1 spending edge. — Arkansas Online, 16 Oct. 2026 Despite most of the country supporting the separation of biological males and females in sports, the vocal minority can be vicious. — Matt Calkins Outkick, FOXNews.com, 15 Oct. 2026 Higher still, Kerr led me up a steep groove that demanded such vicious thrashing and groveling that my whole body hurt. — Daniel Duane, New York Times, 14 Oct. 2026 See All Example Sentences for vicious

Recent Examples of Synonyms for vicious

Adjective

George Bonanno, a psychologist at Columbia University, explains that many people who have intense symptoms initially—such as nightmares and flashbacks—won’t develop PTSD.

— Maia Szalavitz, Scientific American, 20 Oct. 2026
Still, the competition among jewelers is becoming more intense, not only for sports team’s commissions but also to design ever flashier pieces with intricate details.

— Sara Germano, Sportico.com, 20 Oct. 2026

Definition of intense

Adjective

Now in his 25th year on television, Chuck has built a beloved media career through brutal honesty.

— Alejandro Avila OutKick, FOXNews.com, 23 Oct. 2026
Although the decrease in shot volume wasn’t quite as dramatic, Giddey went 1-for-10 from the field and scored only two points in Wednesday’s brutal beatdown by the Raptors.

— Julia Poe, Chicago Tribune, 22 Oct. 2026

Definition of brutal

Adjective

Runa’s incarceration – and death months after her release – is now the subject of a lawsuit brought by her mother against Hyogo Prefectural Police alleging unlawful arrest and detention.

— Hanako Montgomery, CNN Money, 24 Oct. 2026
Last month, the seizure was ruled unlawful by the California Supreme Court.

— Iris Kwok, Los Angeles Times, 24 Oct. 2026

Definition of unlawful

Adjective

The malicious system component silently installs apps that look like weather tools, app lockers and other everyday utilities.

— Kurt Knutsson, FOXNews.com, 23 Oct. 2026
The Federal Bureau of Investigation also warned that malicious actors could exploit the vulnerabilities to execute code remotely, putting sensitive data and networks at risk.

— Jenny Lee, CNBC, 22 Oct. 2026

Definition of malicious

Adjective

Just a half-hour north of San Diego, the property is comprised of over 600 acres of hills, meadows, Japanese gardens, and citrus groves, including 30 miles of private hiking trails and five acres of bio-intensive gardens.

— Condé Nast, Condé Nast Traveler, 22 Oct. 2026
On the cost side, Zuckerberg did acknowledge that Muse is currently very compute-intensive.

— Zev Fima, CNBC, 22 Oct. 2026

Definition of intensive

Adjective

Participants fell into their roles a little too well and, after a prisoner rebellion, increasingly cruel forms of punishment from the guards and a number of students suffering mental breakdowns, the experiment was ended on the sixth day.

— Marlow Stern, Variety, 25 Oct. 2026
But these townswomen — whether the undersexed Bakerwoman (Ella Bruccoleri ) or the prim, cruel busybody the Tailor’s Wife (a deliciously scheming Elizabeth Debicki) — are deeply unhappy with their own lot in life.

— Angelica Jade Bastién, Vulture, 22 Oct. 2026

Definition of cruel

Adjective

What Baldwin is lamenting is our tendency to fall back on binaries — right and wrong, good and evil — rather than to struggle with complexity.

— David L. Ulin, Los Angeles Times, 20 Oct. 2026
It's based on a Russian fairy tale called the Firebird, which is about a young prince who rescues a coterie of princesses from an evil sorcerer.

— Libby Smith, CBS News, 20 Oct. 2026

Definition of evil

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“Vicious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/vicious. Accessed 28 Oct. 2026.

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Synonyms of vicious

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