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 former is a liberal democracy, the latter a vicious dictatorship whose rulers kill their own people to stay in power. — Max Boot, Washington Post, 14 Sep. 2026 Murray took a vicious hit in the first quarter of Sunday’s game against the Green Bay Packers. — Alec Lewis, New York Times, 14 Sep. 2026 When her beloved dog Krypto is poisoned, Kara teams with a vengeful teen (Eve Ridley) and a rambunctious bounty hunter (Jason Momoa) to hunt down the vicious outlaw responsible. — Brian Truitt, USA Today, 11 Sep. 2026 These shortages increase costs and a vicious cycle for folks who need a rung. — Arkansas Online, 9 Sep. 2026 See All Example Sentences for vicious
Recent Examples of Synonyms for vicious
Adjective
  • High-intensity interval training and long-duration intense cardio spike cortisol significantly, and doing them too often without recovery can keep the hormone elevated, but rest and frequency matter more than avoidance.
    — Hanna Wickes, Kansas City Star, 22 Sep. 2026
  • This extra oceanic warmth is also likely to extend hurricane further into fall, with more intense hurricanes more likely than not through at least early November.
    — Sean Macaday, Sacbee.com, 22 Sep. 2026
Adjective
  • Horror films and increasingly brutal crime stories reveal the very large market for the subject.
    — Literary Hub, Literary Hub, 18 Sep. 2026
  • McKinley stages a few bullet-sweating sequences of peril, including a particularly brutal transport of gold bars across a crumbling rope bridge and an underwater accident exacerbated by floating logs.
    — Katie Walsh, Los Angeles Times, 18 Sep. 2026
Adjective
  • But after his son Eugene Horsch, 44, was arrested in June on charges involving unlawful firearms and forgery, police made a series of unsettling discoveries at the family home on Chew Avenue in Philly's Olney neighborhood.
    — Michael Ruiz, FOXNews.com, 19 Sep. 2026
  • Plummer has a history of violent charges in Cook County, including domestic battery and unlawful use of a weapon by a felon, authorities said.
    — Allison Kiehl, Chicago Tribune, 18 Sep. 2026
Adjective
  • Hamilton lets down Claire’s savage hauteur; Mays’ eyes glisten with all the regrets of lost love.
    — Theater Critic, Los Angeles Times, 16 Sep. 2026
  • The savage purge since June of high-momentum stocks – dominated by AI hardware and related industrials – has sapped the bullish aggression of traders, helping to reset tactical sentiment toward a more neutral level.
    — Michael Santoli, CNBC, 15 Sep. 2026
Adjective
  • The technique has similarities to web skimming, where malicious code captures payment information as a shopper types it into an online checkout page.
    — Kurt Knutsson, FOXNews.com, 18 Sep. 2026
  • This malicious torrent leads to the download of the malware loader.
    — Michael Kan, PC Magazine, 17 Sep. 2026
Adjective
  • The second cohort members are all to become part of the intensive acceleration phase that’s steered by the Cambridge Institute for Sustainability Leadership innovation team, with a concentration on pilot readiness.
    — Jennifer Weil, Footwear News, 17 Sep. 2026
  • The inaugural Hot Springs Documentary Film Festival Filmmaker Retreat, a four-day intensive program for filmmakers based in the Mid-South/South, held in partnership with Indie Media Arts South, launching October 10 – 13.
    — Matthew Carey, Deadline, 17 Sep. 2026
Adjective
  • Bronwyn’s mother, Muzzy, who was lambasted all of last season for being cold and arguably cruel to her daughter, is notably softer in her first scene back — though the bob is as cunty as ever.
    — Tom Smyth, Vulture, 17 Sep. 2026
  • He was convicted of four counts of war crimes including murder, torture, cruel treatment and arbitrary detention.
    — Arkansas Online, Arkansas Online, 17 Sep. 2026
Adjective
  • The correspondence helped convince Anders, who fled the Nazis for American exile in 1936, that different kinds of evil cause different kinds of harm.
    — Literary Hub, Literary Hub, 18 Sep. 2026
  • The destination of our hapless hero, a courier (Austin Abrams, absolutely awesome) who must transport an important package between medical facilities, is indeed the game’s residentially evil homebase of Racoon City.
    — David Fear, Rolling Stone, 18 Sep. 2026

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Cite this Entry

“Vicious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/vicious. Accessed 24 Sep. 2026.

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