Definition of viciousnext
1
2
3
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

4
5

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 Gunther nailed Balor and Owens with a pair of big boots, then blasted Zayn with a vicious chop. Blake Oestriecher, Forbes.com, 2 Aug. 2026 So kudos to the extras who steal scenes from them in the background, flailing like avant-garde dancers when a vicious mental parasite leaps from grandmothers to joggers to security guards on a quest to find something awful. Amy Nicholson, Los Angeles Times, 30 July 2026 The Redditors attack with the vicious specificity that only intimacy can produce. Hannah Engler Harvey, Longreads, 30 July 2026 The drastic measures Alice takes to end this vicious cycle naturally bring her closer to Catherine’s school of violent retribution. Alison Herman, Variety, 27 July 2026 See All Example Sentences for vicious
Recent Examples of Synonyms for vicious
Adjective
  • These could include intense earthquake swarms, rapid ground deformation, changing gas emissions, and unusual heat flow.
    Atharva Gosavi, Interesting Engineering, 12 Aug. 2026
  • Footage aired by local media showed massive flames and fireballs erupting from the tank, with black and orange smoke rising in the sky as firefighters spray what appears to be foam or water in efforts to quench the intense fire.
    ABC News, ABC News, 11 Aug. 2026
Adjective
  • What follows is a brutal fight for survival against aggressive, hungry, and carnivorous dinosaurs who quickly turn the community's previously idyllic streets into their own personal feeding ground.
    Megan McCluskey, Time, 14 Aug. 2026
  • The company's earnings should also benefit from a better freight cycle, which has shown signs of improvement after a brutal multiyear recession that began in 2022.
    Jeff Marks, CNBC, 14 Aug. 2026
Adjective
  • Greg Field, a 27-year LAPD veteran and director of the Police Transportation Motor Transport Division, noted the sync systems are useful for mass messages, such as at a fire evacuation or an unlawful assembly.
    Andrew J. Campa, Los Angeles Times, 10 Aug. 2026
  • McFadden is currently charged with unauthorized use of a motor vehicle, robbery, and unlawful possession of a firearm.
    Matthew Ablon, CBS News, 10 Aug. 2026
Adjective
  • 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
  • The lifestyle mogul made a savage comment about Meghan Markle in a cover story for PEOPLE on Wednesday, calling out her Netflix show, With Love, Meghan.
    Leigh Blickley, Entertainment Weekly, 6 Aug. 2026
Adjective
  • This will likely not be the last time US courts see the malicious tactic, as AI tools become more commonplace in court systems.
    Ashley Belanger, ArsTechnica, 14 Aug. 2026
  • After all, an agent could accept a URL and download a malicious package without its human user even knowing.
    David Berreby, IEEE Spectrum, 13 Aug. 2026
Adjective
  • His preference for a 4-2-3-1 has been evident, however, and the German is looking for Newcastle to be aggressive in the press, intensive and also direct, with a plan to get the ball forward as quickly as possible.
    Chris Weatherspoon, New York Times, 14 Aug. 2026
  • If the electricity required to operate the system comes from carbon-intensive sources, some of the benefits of capturing atmospheric CO₂ are lost.
    Prabhat Ranjan Mishra, Interesting Engineering, 13 Aug. 2026
Adjective
  • Impermanence turns out to be the cruelest fact and the most merciful one at once.
    Dr. Lucy McBride, Time, 8 Aug. 2026
  • His central characters can be nasty, disgusting, violent, hysterically cruel, and passionately consumed.
    CT Jones, Rolling Stone, 8 Aug. 2026
Adjective
  • Bannister starred in all five Phantasm films, battling the evil Tall Man, a role that cemented his place in horror cinema.
    Tim Lammers, Forbes.com, 11 Aug. 2026
  • Despite the very best efforts of writers, cast and crew, Rhaenyra, her evil half-brothers and all their fellow citizens were never Martin’s main characters.
    Lorraine Ali, Los Angeles Times, 10 Aug. 2026

Browse Nearby Words

Cite this Entry

“Vicious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/vicious. Accessed 16 Aug. 2026.

More from Merriam-Webster on vicious

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster