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 No vicious prank call, either (thankfully). Zak Keefer, New York Times, 27 Apr. 2026 That backstory might prove disturbing for younger tykes, as will a vicious battle between Sebastian and two menacing dogs, no doubt accounting for the film’s PG rating. Frank Scheck, HollywoodReporter, 27 Apr. 2026 Beijing has long struggled to drive domestic consumption, while brutal competition in many industries has pushed producers to cut prices, triggering a vicious cycle in which people hold off on purchases in anticipation of coming discounts. Jeronimo Gonzalez, semafor.com, 23 Apr. 2026 Lindsay-Abaire, who has a fondness for a good turn of phrase and an ear for the foibles of the tristate suburbs (both figuring in his Kimberly Akimbo), has said he was inspired in part by following his own neighborhood’s Google group, which had vicious fights about drainage systems. Jackson McHenry, Vulture, 22 Apr. 2026 See All Example Sentences for vicious
Recent Examples of Synonyms for vicious
Adjective
  • Later, the Moon squares Mars in Aries, which can make the moment feel more intense.
    Tarot.com, Baltimore Sun, 7 May 2026
  • Keep in mind that Pluto retrogrades happen every year for approximately half the year, but this particular cycle will be especially raw and intense, both at a personal and global level.
    Valerie Mesa, PEOPLE, 6 May 2026
Adjective
  • In Oddity, Darcy (Carolyn Bracken) is driven entirely by grief over the brutal murder of her twin sister.
    Louis Peitzman, Vulture, 1 May 2026
  • Demand for EVs in China is slowing after the government trimmed consumer subsidies and perks, and there’s no end in sight to a brutal price war as a crowded field of EV rivals jostle to outperform and undercut one another.
    Simone McCarthy, CNN Money, 1 May 2026
Adjective
  • In February of this year, a district court ruled that DHS's third-country removal practices were unlawful, but the ruling was stayed pending the government's appeal, allowing the deportations to continue.
    Julia Ingram, CBS News, 1 May 2026
  • Evanston police initially detained five males, and three of them were later charged by the Cook County State’s Attorney’s Office on several felony and misdemeanor counts of drug and unlawful weapon possession.
    Claire Murphy, Chicago Tribune, 30 Apr. 2026
Adjective
  • This time playing an underling rather than a boss, Hoskins gave one of the best performances of his career in what remains a high point for Jordan as well, a lyrical and poignant yet savage film noir filled with regret, rage, and unrequited love.
    Jim Hemphill, IndieWire, 20 Apr. 2026
  • 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
Adjective
  • The malicious Iranian regime is our national enemy.
    Lucas Robinson, San Diego Union-Tribune, 7 May 2026
  • Under President John Adams, the Federalists sought to eradicate French ideological influence by raising the bar to citizenship, lowering the bar to deportation, and criminalizing malicious criticism of the federal government.
    Daniel Immerwahr, New Yorker, 4 May 2026
Adjective
  • The intensive, weeklong building sessions named after former President Jimmy Carter and his late wife Rosalynn have constructed roughly 5,000 homes in 14 countries since 1984.
    ABC News, ABC News, 1 May 2026
  • The others, though some needed intensive treatments, are stable, the zoo said.
    Cristóbal Reyes, The Orlando Sentinel, 1 May 2026
Adjective
  • Even his students can be casually cruel to each other, emulating a president that Artie almost cannot fathom.
    John Warner, Chicago Tribune, 2 May 2026
  • Baseball is a sport built on failure surrounded by a cruel, cynical business, but this level of irony is almost too rich to digest.
    Dieter Kurtenbach, Mercury News, 1 May 2026
Adjective
  • For one thing, when extremely evil people never seem to get their righteous and fiery comeuppance, my rage can curdle a bit.
    Literary Hub, Literary Hub, 1 May 2026
  • Because instead of some hot, evil British woman who could show him the time of his life, Vish is stuck on this trip with me, the world’s first living fossil.
    Angel Saunders, PEOPLE, 1 May 2026

Browse Nearby Words

Cite this Entry

“Vicious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/vicious. Accessed 8 May. 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