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 Jane’s belief in forgiveness crashes up against the far less categorical reality of a vicious world when the Lawsons are dropped into a situation of extreme terror. — David Rooney, HollywoodReporter, 17 Sep. 2026 Eliot was the English Tolstoy, with a vicious sting in her tail. — The Week Us, TheWeek, 15 Sep. 2026 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 See All Example Sentences for vicious
Recent Examples of Synonyms for vicious
Adjective
  • The coalition led by Prime Minister Pedro Sánchez's Socialists announced the new measures earlier Tuesday, after four days of intense protests centered around an encampment in Puerta del Sol, Madrid's most iconic plaza.
    — Arkansas Online, Arkansas Online, 30 Sep. 2026
  • Consequently, the resulting economic stimulus, inflationary pressure, and intense competition for capital could propel the 10 year US Treasury yield toward a high of 6% before next January.
    — , CNBC, 29 Sep. 2026
Adjective
  • Thirty-two years after Brown Simpson's brutal killing, her sister continues to alert people to the dangers of intimate partner violence.
    — Emily Shapiro, ABC News, 2 Oct. 2026
  • The Trojans face Washington at the Coliseum before a brutal stretch that includes Penn State, Indiana and Ohio State, with their playoff hopes at stake.
    — Ryan Kartje, Los Angeles Times, 2 Oct. 2026
Adjective
  • Legacy admissions hasn’t been declared unlawful under the tax code, and an admissions preference doesn’t prove a donation purchased admission.
    — Jayson Weingarten, Fortune, 26 Sep. 2026
  • Owen McIntire, 20, of Parkville, faces one count of malicious destruction of property and one count of unlawful possession of an unregistered destructive device for the March 2025 incident.
    — Nathan Pilling, Kansas City Star, 25 Sep. 2026
Adjective
  • The Philadelphia Semiconductor Index weathered a savage 30% drawdown, has been choppily trendless for two months, then in recent days finally broke above its downtrend and surmounted the 50-day moving average.
    — Michael Santoli, CNBC, 22 Sep. 2026
  • 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
Adjective
  • Once installed, the malicious app pushes you to enable Android's Accessibility service.
    — Kurt Knutsson, FOXNews.com, 2 Oct. 2026
  • Companies should detect prompt injection, malicious or compromised tools, behavioral anomalies, data exfiltration and other threats.
    — Shashwat Sehgal, Forbes.com, 1 Oct. 2026
Adjective
  • At research-intensive institutions, critical knowledge is often distributed across specialized offices, sponsor websites, internal guidance, prior submissions and experienced staff.
    — Mayank Kejriwal, Forbes.com, 1 Oct. 2026
  • Removing the thermal drying stage could also make electrode manufacturing less capital- and energy-intensive.
    — Neetika Walter, Interesting Engineering, 1 Oct. 2026
Adjective
  • In the book, MacLachlan recalls being utterly dumbfounded at having been asked to do something so oblivious at best and cruel at worst.
    — Rachel Brodsky, Los Angeles Times, 25 Sep. 2026
  • Many of them, including Ned and his childhood friend and rival, Roland, are scarred by their time as youth players, haunted by memories of the sadistic coaches and cruel, competitive fathers who terrorized them both on and off the court.
    — Literary Hub, Literary Hub, 24 Sep. 2026
Adjective
  • Denigrating the relationship—deciding, for instance, that the rejecter was evil, dishonest, unworthy of your respect or time— devalues your own history, in effect consigning the whole relationship to the trash bin.
    — George Loewenstein, Vogue, 28 Sep. 2026
  • The stories say the ghosts are believed to be protective and not evil.
    — Kaitlyn Keegan, Hartford Courant, 25 Sep. 2026

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Cite this Entry

“Vicious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/vicious. Accessed 3 Oct. 2026.

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