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 Oldman scored high marks for his performance as a corrupt New York homicide detective involved with a vicious hitwoman (Lena Olin) in Romeo Is Bleeding (1993). — Mike Barnes, HollywoodReporter, 28 Oct. 2026 The other was Albrecht Hohler, thirty, a Communist member of the paramilitary group the Red Front Fighters and well known locally as a particularly vicious thug—a petty criminal who had been released from jail only a few months earlier. — Literary Hub, 27 Oct. 2026 The vicious cycle of the current model, of course, is that to become marketable a team needs to get and retain good players, and to do that a school has to spend money, which cycles the whole thing back to the start. — Dana O’Neil, CNN Money, 24 Oct. 2026 This creates a vicious cycle, where one condition makes the other worse. — Md Published, Verywell Health, 23 Oct. 2026 See All Example Sentences for vicious
Recent Examples of Synonyms for vicious
Adjective
  • But places like South Florida have seen more intense storms more frequently than before.
    — Alex Harris, Miami Herald, 11 Nov. 2026
  • In May 2023, the G-7 began intense discussions on AI governance that would eventually produce a code of conduct for developers.
    — DANIEL REMLER, Foreign Affairs, 10 Nov. 2026
Adjective
  • Once home to a few hundred people, Potrerillos is now nearly deserted — a pueblo fantasma, or ghost town — one of many in a region where residents have abandoned their homes amid a brutal war between factions of the Sinaloa cartel.
    — Senior Editor, Los Angeles Times, 13 Nov. 2026
  • It’s been roughly three years since Russia launched its unprovoked, brutal invasion into Ukraine.
    — NBC news, NBC news, 13 Nov. 2026
Adjective
  • Chrinos was charged with carrying a rifle outside a home or business, three counts of unlawful transportation of a firearm, three counts of unregistered firearms and three counts of unregistered ammunition, DHS said.
    — Kyla Guilfoil, NBC news, 7 Nov. 2026
  • The department also wants to strengthen corporate oversight and deter unlawful applications.
    — Aamir Khollam, Interesting Engineering, 6 Nov. 2026
Adjective
  • Reducing Gulliver’s Travels to only a topsy-turvy tale of humans both tiny and massive is to ignore the savage intellect that penned its words.
    — Literary Hub, Literary Hub, 28 Oct. 2026
  • In ancient, supposedly more savage times, public killings were common.
    — Dr. Michael Good, Hartford Courant, 22 Oct. 2026
Adjective
  • Disrupting the servers used to control malware doesn't automatically remove malicious firmware from devices already sitting in people's homes.
    — Kurt Knutsson, FOXNews.com, 13 Nov. 2026
  • The operation was sophisticated, involving fake job interviews and malicious code.
    — Joel Breakstone, Contributor,Nadav Ziv, Contributor, CNBC, 13 Nov. 2026
Adjective
  • While technical and economic hurdles remain, this approach could create new possibilities for processing data in space and reducing dependence on resource-intensive ground infrastructure.
    — Expert Panel®, Forbes.com, 12 Nov. 2026
  • Data centers concentrate these power-intensive accelerators into dense server racks drawing 40 to more than 120 kilowatts each to maximize inter-chip communication speed.
    — Mrigakshi Dixit, Interesting Engineering, 10 Nov. 2026
Adjective
  • Newsom and other opponents of capital punishment have long argued that the process is costly, cruel and discriminatory, with death sentences disproportionately handed down to defendants of color.
    — Sonja Sharp, Los Angeles Times, 5 Nov. 2026
  • In a cruel twist of fate, the back half of the trailer shows Geoff being affected by severe confusion, sitting outside his house in the cold.
    — Jason P. Frank, Vulture, 5 Nov. 2026
Adjective
  • Americans are up in arms about the much broader graft practiced by much of the political class, not just by its evil faux-king.
    — Larry Wilson, Daily News, 7 Nov. 2026
  • Some stories can harden moral perception, of course, pushing us to dichotomize the purely good and the purely evil, as in the moral pornography of superhero comics and revenge flicks.
    — Paul Bloom, New Yorker, 6 Nov. 2026

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Cite this Entry

“Vicious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/vicious. Accessed 15 Nov. 2026.

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