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 This leads to a vicious cycle, as the disease causes sleep disruption, and sleep disruption then worsens the disease, according to the researchers. Angelica Stabile, FOXNews.com, 7 Apr. 2026 In 1903, a vicious winter storm reduced most of the piers to splinters, and by 1906 offshore oil production at Summerland had all but ceased. Jeffrey Marlow, New Yorker, 5 Apr. 2026 Great civilizations outlast even the most vicious occupiers. Bobby Zirkin, Baltimore Sun, 5 Apr. 2026 Now, Bardem is getting a chance to sink his teeth into a similarly vicious freak and natural disaster in Apple TV’s upcoming miniseries adaptation of Cape Fear, playing the terrifying Max Cady. Jason P. Frank, Vulture, 31 Mar. 2026 See All Example Sentences for vicious
Recent Examples of Synonyms for vicious
Adjective
  • No injuries were reported in the blaze and no structures were threatened, despite an extensive list of evacuation orders and warnings that were issued at the fire's most intense point.
    Zach Boetto, CBS News, 16 Apr. 2026
  • Combining creatine with electrolytes may improve hydration and exercise performance, especially during intense or prolonged workouts.
    Morgan Pearson, Verywell Health, 15 Apr. 2026
Adjective
  • Rachel is doing her best to be supportive as Ian is desperate to learn if his ex-wife, Wahionaweh, and their son, Swiftest of Lizards, survived the brutal massacre of their village and so many others.
    Maggie Fremont, Vulture, 10 Apr. 2026
  • On the thermal side, flat-wire coils and cooling fins reduce energy losses and help the motor hold its peak output longer on brutal climbs, rather than quietly throttling back when things get hot.
    Omar Kardoudi April 10, New Atlas, 10 Apr. 2026
Adjective
  • Under Texas law, a contract signed under duress is generally voidable if it was obtained through an improper or unlawful threat that overrode the signer’s free will.
    Chase Rogers, Dallas Morning News, 10 Apr. 2026
  • Violating that trust is both cruel and unlawful.
    DeJanay Booth-Singleton, CBS News, 10 Apr. 2026
Adjective
  • The famed African American journalist investigated lynchings across the South and wrote about the savage incidents that the white press had already explained away.
    Case Thorp, The Orlando Sentinel, 5 Apr. 2026
  • The loss of books is minor, almost trivial, in light of all the horrors and violence unleashed by this senseless war, but the potential loss of these books is a sad reminder that we’re all affected and implicated in America’s savage flailings.
    James Folta, Literary Hub, 17 Mar. 2026
Adjective
  • In worst-case scenarios, malicious code can exploit weaknesses in your phone, create backdoor access and pull in even more data without your knowledge.
    Kurt Knutsson, FOXNews.com, 9 Apr. 2026
  • Over a four-week period starting on December 12, Black Lotus observed more than 290,000 distinct IP addresses sending at least one DNS request to the malicious APT28 DNS resolver.
    Dan Goodin, ArsTechnica, 8 Apr. 2026
Adjective
  • But maintaining security over the strait would require a high-risk, resource-intensive operation that could be a yearslong American commitment.
    Aamer Madhani, Fortune, 9 Apr. 2026
  • The timetable that Kaufmann laid out Wednesday night envisions intensive design work through the end of this year, with construction starting in 2027.
    Bruce Finley, Denver Post, 9 Apr. 2026
Adjective
  • Dahl’s books are fanciful and imaginative, but also dark, cynical, and mean (and, unfortunately, often reflected his real-life ugliness), spinning stories in which gruesome and unpleasant fates befell rotten kids, and adults were frequently selfish, cruel, and not to be trusted.
    Wilson Chapman, IndieWire, 10 Apr. 2026
  • Violating that trust is both cruel and unlawful.
    DeJanay Booth-Singleton, CBS News, 10 Apr. 2026
Adjective
  • Besides, anyone who doesn’t agree with the left is said to be evil, so anything progressives do to destroy, or at least restrain that evil, is justified.
    Chris Roemer, Baltimore Sun, 9 Apr. 2026
  • Fifteen years later, her sister Merry faces her family’s dark past with a journalist uncovering the nature of the evil force that undid them.
    Rebecca Rubin, Variety, 9 Apr. 2026

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Cite this Entry

“Vicious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/vicious. Accessed 17 Apr. 2026.

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