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 The film also shows Maddox and her father in a vicious argument inside her car that illustrates the fracturing of their once-close bond. Los Angeles Times, 22 July 2026 The pair routinely fired vicious posts back and forth on the social media site formerly known as Twitter. Shania Russell, Entertainment Weekly, 22 July 2026 Imagine an especially vicious adaptation of Lord of the Flies or a remake of Gus Van Sant’s Elephant but directed by Gaspar Noé. Leslie Felperin, HollywoodReporter, 17 July 2026 Over the course of 22 episodes, the Doomies crew encounters vampires, parasitic demons, vicious mermaids, and some spirits specific to French folklore, all rendered as real threats towards our heroes. Wilson Chapman, IndieWire, 17 July 2026 See All Example Sentences for vicious
Recent Examples of Synonyms for vicious
Adjective
  • His plan, scheduled for a vote at the Beach commission on Wednesday after two years of often-intense debate and revision, comes in the prosaic form of a technical zoning change.
    Andres Viglucci, Miami Herald, 22 July 2026
  • Criticism from the political left was, predictably, swift and intense.
    Ian Miller OutKick, FOXNews.com, 22 July 2026
Adjective
  • San Francisco has already seen right-hander Hayden Birdsong undergo Tommy John surgery earlier this year, and losing McDonald for an extended period of time would be another brutal blow for the pitching staff.
    Justice delos Santos, Mercury News, 25 July 2026
  • This thing—the military—aims, at least in Harlow’s eyes, to turn boys into tools for brutal battlefield aims.
    Jasper Craven, New Yorker, 24 July 2026
Adjective
  • The 15-year-old is being held on suspicion of three counts of first-degree assault and one count of second-degree unlawful possession of a firearm.
    Alicia Victoria Lozano, NBC news, 28 July 2026
  • California Secretary of State Shirley Weber voiced support for the bill in a statement and said the nation’s elections must remain free from intimidation and unlawful interference from any source.
    Alula Alderson, Sacbee.com, 27 July 2026
Adjective
  • The Yellow Death has disfigured the population, and soldiers in white-and-red tunics serve the savage Duke of Tviot.
    Dan Piepenbring, Harpers Magazine, 30 June 2026
  • Josefowicz, in her decathlon of a performance, brought Ligeti’s savage discontinuities to the surface.
    Alex Ross, New Yorker, 29 June 2026
Adjective
  • On this occasion, OpenAI appears to have been transparent about its involvement in the incident and is working alongside Hugging Face to respond, but defenders need to prepare for a world where such tools are in the hands of openly malicious actors.
    Tim Keary, Forbes.com, 23 July 2026
  • Skubal did not say those words about the MRI and the arbitration hearing with any malicious tone.
    Cody Stavenhagen, New York Times, 22 July 2026
Adjective
  • The Warrior-Scholar Project is a STEM intensive founded in 2012 at Yale and has served nearly 3,000 veterans, challenging them with up to 75 hours of academic work.
    Francesca Pinney, Los Angeles Times, 30 July 2026
  • The company believes those products could support several parts of the defense manufacturing chain, particularly facilities involved in shipbuilding, advanced materials production and energy-intensive industrial operations.
    Aamir Khollam, Interesting Engineering, 30 July 2026
Adjective
  • Gomez has endured a lengthy list of cruel setbacks during his 11-year Liverpool career and faces a wait to learn the extent of his latest injury.
    James Pearce, New York Times, 26 July 2026
  • Obsessed with recovering her fortune, Magdalen’s uses of disguise and performance become manipulative, treacherous, and even cruel.
    Literary Hub, Literary Hub, 24 July 2026
Adjective
  • The series is chock full of supernatural happenings, with evil and malicious beings (both human and not) around every corner.
    Hannah Abraham, Forbes.com, 29 July 2026
  • Figures tangle in a perpetual struggle between good and evil, but always with the reassurance that goodness will prevail.
    The Editors of ARTnews, ARTnews.com, 28 July 2026

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Cite this Entry

“Vicious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/vicious. Accessed 1 Aug. 2026.

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