Definition of viciousnext
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as in unlawful
not conforming to a high moral standard; morally unacceptable a truly vicious person detested by almost everyone

Synonyms & Similar Words

Antonyms & Near Antonyms

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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 Prosecutors have argued the chain stolen during the fight ultimately led to the vicious beatdown of Anderson at the MGM Grand on September 7 which preceded the shooting of Shakur and Knight. Taylor Romine, CNN Money, 26 Aug. 2026 Assad’s brutal dictatorship presided over mass human rights violations, an economic collapse, and ultimately a vicious internecine conflict that left huge numbers dead and millions displaced until he was overthrown in 2024. Prashant Rao, semafor.com, 25 Aug. 2026 The bill known as Clarity has struggled to get across the finish line for multiple reasons, but the biggest has arguably been the vicious interference campaign run by the banking industry. Omid Malekan, Fortune, 21 Aug. 2026 But Roy’s story of Annie (Arjun Raina), a New Delhi architecture student caught in a vicious cycle of failing and repeating his studies, gradually reveals itself as a sharp and poignant portrayal of youth, deftly poised between hope and cynicism. Jill Goldsmith, Deadline, 18 Aug. 2026 See All Example Sentences for vicious
Recent Examples of Synonyms for vicious
Adjective
  • Motion Applied brings experience from motorsport, where power electronics face rapid load changes and intense operating conditions.
    Aamir Khollam, Interesting Engineering, 2 Sep. 2026
  • As if this weren’t enough for one day, Venus will also make its debut in the secretive and smoldering sign of Scorpio, where the love planet trades light-hearted flirtation for something deeper and way more intense.
    Valerie Mesa, PEOPLE, 1 Sep. 2026
Adjective
  • Within a span of four months in Fort Worth last year, Watkins and Snellings were killed in similarly brutal attacks in the Near Southside and Historic Southside sections of the city.
    Emerson Clarridge, Fort Worth Star-Telegram, 28 Aug. 2026
  • Even so, when investor confidence broke in 1997, the adjustment was swift and brutal.
    MICHAEL PETTIS, Foreign Affairs, 28 Aug. 2026
Adjective
  • Spires is also charged with felony unlawful possession of a firearm by a dangerous person and three misdemeanors, while Wilson is also charged with two misdemeanors, filings show.
    Meredith Colias-Pete, Chicago Tribune, 31 Aug. 2026
  • Put more bluntly, sports event contracts are protected by federal law in some parts of the country but remain vulnerable elsewhere to states deeming them unlawful.
    Michael McCann, Sportico.com, 31 Aug. 2026
Adjective
  • Cole, who has to maneuver his way around 20 savage crew members, each of whom will need to be killed, doesn’t waste a homicidal movement.
    Owen Gleiberman, Variety, 19 Aug. 2026
  • The savage battles of Iwo Jima and Okinawa had already demonstrated the ferocity with which Japanese forces would defend their homeland.
    James M. Scott, Time, 10 Aug. 2026
Adjective
  • That leaves a short window during which malicious activity can contaminate the prediction machinery again.
    Atharva Gosavi, Interesting Engineering, 28 Aug. 2026
  • An attacker can then register the site and plant malicious instructions on it.
    Dan Goodin, ArsTechnica, 27 Aug. 2026
Adjective
  • By the twentieth century, intensive farming practices had left the South dangerously vulnerable to erosion, producing depleted swaths of land where kudzu would later flourish.
    The Editors, JSTOR Daily, 26 Aug. 2026
  • The next day, Alex Pretti, an intensive-care nurse and a lifelong Catholic, was shot and killed by federal agents.
    Bill McKibben, New Yorker, 26 Aug. 2026
Adjective
  • Having Sheridan actually be a cruel person was one of the key audience expectations the writer-director hoped to flip in the pursuit of laughs.
    William Earl, Variety, 28 Aug. 2026
  • But Triage does have a moment in which an ember of the old cruel optimism flickers.
    Charles Finch, The Atlantic, 28 Aug. 2026
Adjective
  • As someone who isn’t a character person, the centerpiece for me is Villains Grove, which takes over the Redwood Creek Challenge Trail with projections and effects that nod to various evil characters.
    Todd Martens, Los Angeles Times, 1 Sep. 2026
  • Like Slaughterhouse–Five, Mother Night explores the shadowy line separating good and evil during wartime.
    Literary Hub, Literary Hub, 31 Aug. 2026

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Cite this Entry

“Vicious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/vicious. Accessed 3 Sep. 2026.

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