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 Her desire to promote her Protestant faith, along with a yearning to expand England’s political authority, helped fuel a vicious campaign to take control of Ireland, where the Reformation’s teachings had not taken hold. Peter C. Mancall, The Conversation, 24 June 2026 Surely there were those in attendance, and those watching, who conjured horrible thoughts of Patriots receiver Darryl Stingley being left permanently paralyzed from the chest down after taking a vicious hit from the Oakland Raiders’ Jack Tatum during a 1978 preseason game. Steve Buckley, New York Times, 23 June 2026 As an adult, Aemond is vicious, tactical and easily identifiable by wearing an eye patch over a blue glass ball where his eye used to be. Skyler Trepel, PEOPLE, 22 June 2026 Exotic instruments occasionally pop up—melodica, vibraslap, a vicious bass clarinet breakdown from producer Jim Marlowe—but only as accents, not as orchestration. Reed Jackson, SPIN, 19 June 2026 See All Example Sentences for vicious
Recent Examples of Synonyms for vicious
Adjective
  • Indie Shakes managing director David Melville distills his production around scenes of intense conflict.
    Theater Critic, Los Angeles Times, 1 July 2026
  • As the planet warms, extreme heat events are becoming more common, intense and long-lasting.
    Andrew Freedman, CNN Money, 1 July 2026
Adjective
  • The New York Mets are in disarray thanks to a brutal start to what was supposed to be a promising season.
    Matt Reigle OutKick, FOXNews.com, 27 June 2026
  • In 1972, a year after a brutal conflict—one in which India helped with the rebirth of the eastern wing of Pakistan as Bangladesh—New Delhi and Islamabad concluded an agreement that resumed limited trade.
    Michael Kugelman, Time, 26 June 2026
Adjective
  • Jazzlyn Johnson, a spokesperson for Johnson, said in an email that Sanchez-Munoz had been charged with one count of second-degree felony murder, five counts of unlawful use of a weapon and five counts of armed criminal action.
    Nathan Pilling, Kansas City Star, 30 June 2026
  • The policies Goode violated include unlawful harassment discrimination policy, professional conduct, code of conduct and mobile data access.
    Matt Schooley, CBS News, 29 June 2026
Adjective
  • The Yellow Death has disfigured the population, and soldiers in white-and-red tunics serve the savage Duke of Tviot.
    Dan Piepenbring, Harpers Magazine, 30 June 2026
  • Josefowicz, in her decathlon of a performance, brought Ligeti’s savage discontinuities to the surface.
    Alex Ross, New Yorker, 29 June 2026
Adjective
  • He was charged with arson, malicious destruction by means of a fire and timber set aflame.
    ABC News, ABC News, 25 June 2026
  • Johnson said the bill was meant to curtail malicious records requests, which do happen, where a citizen goes after copious amounts of records just to be a jerk and cost the government time and money.
    Los Angeles Times, Los Angeles Times, 25 June 2026
Adjective
  • Housed in remote data centers whose energy-intensive maintenance perpetuates the changing environmental conditions that threaten Tuvalu’s existence, the attempt to redeposit territory digitally drives home the paradoxes, and costs, of storage.
    Kelly Presutti, ARTnews.com, 26 June 2026
  • Qatari mediators returned to the Iranian capital for 17 hours of what the diplomat described as intensive negotiations.
    E. Eduardo Castillo, Chicago Tribune, 26 June 2026
Adjective
  • Swift moved on from one Brit to the next, quietly dating actor Joe Alwyn from 2017 to 2023, while the world spent back-to-back cruel summers without Taymerica.
    Savannah Walsh, Vanity Fair, 26 June 2026
  • This is particularly gratifying given the absurd and cruel trolling the young actress received from the toxic corners of internet fandom leading up to the film’s release.
    James Hibberd, HollywoodReporter, 26 June 2026
Adjective
  • With some assistance from the bounty hunter Lobo (Jason Momoa), Kara and Ruthye track down Krem and his evil Brigands.
    Brian Truitt, USA Today, 27 June 2026
  • Load was a Number One seller in 1996, and its comelier evil twin, ReLoad, repeated the feat a year and a half later.
    Kory Grow, Rolling Stone, 27 June 2026

Browse Nearby Words

Cite this Entry

“Vicious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/vicious. Accessed 1 Jul. 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