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 Unmarried men and women might also receive a vicious rejection from potential partners. Melissa Chan, Fortune, 14 Feb. 2026 Catherine’s brother Hindley, a vicious bully whose abuse is part of what drives Cathy and Heathcliff so closely together, is cut entirely, his role combined with Catherine’s father. Wilson Chapman, IndieWire, 13 Feb. 2026 Everyone is fair game for her vicious tongue. R. Eric Thomas, Chicago Tribune, 13 Feb. 2026 On her 18th birthday, Aria’s Chicago mobster father tells her that she’s expected to marry Luca, the vicious heir to a rival New York City gang. Lauren Wilson, NBC news, 13 Feb. 2026 See All Example Sentences for vicious
Recent Examples of Synonyms for vicious
Adjective
  • The mild meats and cheeses should be consumed first, with diners gradually moving on to the most intense ones so as to not overpower the more delicate flavors.
    Condé Nast Traveler, Condé Nast Traveler, 26 Feb. 2026
  • As Nancy Guthrie’s disappearance nears one month, the intense focus on her case is drawing overdue attention to other missing person cases that have long gone unnoticed.
    Alexandra Banner, CNN Money, 26 Feb. 2026
Adjective
  • The regime accused protesters of being Israeli spies and deployed the brutal local paramilitary Basij force to suppress demonstrations which were sparked by poor economic conditions but transformed into calls for regime change.
    Farida Elsebai, CNN Money, 20 Feb. 2026
  • Olivia, Bailey’s mother, was really Kate Smith, and her father was Nicholas Bell (David Morse), famous mob lawyer for The Syndicate, or The Organization, a group notorious for crimes and brutal retaliation against their enemies.
    Dessi Gomez, Deadline, 20 Feb. 2026
Adjective
  • These new regulations impose the world’s fastest removal deadline, requiring platforms to take down unlawful synthetic media within three hours of notification.
    Munis Raza, Interesting Engineering, 20 Feb. 2026
  • On Wednesday, a coalition of health and environmental groups sued the EPA over the revocation, calling it unlawful and harmful.
    Dorany Pineda, Los Angeles Times, 20 Feb. 2026
Adjective
  • Watching Marcia Gay Harden embark on a savage killing spree was not on my cinematic bingo card for 2026.
    Frank Scheck, HollywoodReporter, 19 Feb. 2026
  • Wade Wilson confessed to the savage murders of two women, yet even that brutality failed to repel admirers.
    Stephanie Nolasco, FOXNews.com, 15 Feb. 2026
Adjective
  • Rodney Ward could face up to 25 years in prison for the charges of theft and malicious destruction of property.
    Caroline Foreback, CBS News, 18 Feb. 2026
  • Their poverty, the fruit of Salieri’s malicious ploys, tests the limits of their endurance.
    Theater Critic, Los Angeles Times, 18 Feb. 2026
Adjective
  • These calculations are computationally intensive and only recently became feasible.
    Neetika Walter, Interesting Engineering, 21 Feb. 2026
  • Modernizing manufacturing and automating industry will be energy-intensive.
    Stuart Loren, Chicago Tribune, 20 Feb. 2026
Adjective
  • His lawyer, Béatrice Zavarro, sought to show that his past had formed him, but there was a cruel irony in the reference.
    Gaby Wood, Vogue, 21 Feb. 2026
  • Many of these schools are impossibly competitive – impossibly and fantastically cruel.
    Anastasia Tsioulcas, NPR, 20 Feb. 2026
Adjective
  • Newcomers to the popular franchise are Greta Lee as the evil Lilypad game tablet and Conan O'Brien playing a hilarious potty training toy called Smarty Pants.
    Jeff Spry, Space.com, 20 Feb. 2026
  • Some cities in China have banned fireworks out of concerns over safety and air pollution, but the measures are controversial as firecrackers, traditionally used to scare off evil spirits, remain central to Lunar New Year celebrations.
    Reuters, NBC news, 19 Feb. 2026

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Cite this Entry

“Vicious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/vicious. Accessed 27 Feb. 2026.

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