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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 Lucy needs someone to break her out of what could quickly become a vicious cycle. Jack Beresford, MSNBC Newsweek, 8 Aug. 2025 The Navy plans to name a new Arleigh Burke-class destroyer after Cpl. Kyle Carpenter, a former Camp Pendleton Marine who was awarded the Congressional Medal of Honor for an act of heroism during vicious fighting in Afghanistan nearly 15 years ago. Gary Robbins, San Diego Union-Tribune, 7 Aug. 2025 But each year, fewer babies are born, and more deaths are recorded – a vicious cycle and a symptom of a population skewing older and older. Jessie Yeung, CNN Money, 7 Aug. 2025 Coming less than a year after the fatal shooting of UnitedHealthcare CEO Brian Thompson in the same neighborhood, which was widely regarded as an assassination motivated by contempt for the American health insurance industry, LePatner’s death prompted a similarly vicious response on social media. Miles Klee, Rolling Stone, 1 Aug. 2025 See All Example Sentences for vicious
Recent Examples of Synonyms for vicious
Adjective
  • The community’s response is intense: panicked and bereaved mothers and fathers turn on Justine, indirectly a victim herself; misguided outrage blinds them to the real menace operating unimpeded in their midst.
    Andy Crump, Time, 9 Aug. 2025
  • The race to claim the top seller on iTunes or dominate streaming platforms is intense, with pop, rock, and rap acts all aiming for No. 1 on those platforms.
    Hugh McIntyre, Forbes.com, 8 Aug. 2025
Adjective
  • At the world’s southern edge, where nature is brutal and time stands still, hunters, herders and families endure the cold and solitude as ghosts roam the pampa.
    Anna Marie de la Fuente, Variety, 16 Aug. 2025
  • A day after a brutal collision with the railing near the camera well — and a camera — Freddy Fermin is back behind the plate and batting ninth in a lineup identical to Friday’s.
    Jeff Sanders, San Diego Union-Tribune, 16 Aug. 2025
Adjective
  • Instead, advocates say those who are not in shelter are being pushed farther and farther away from services in an attempt to escape unlawful camping citations.
    Keely Doll, The Courier-Journal, 15 Aug. 2025
  • Drake Solomon accuses his former employer of disability discrimination and an unlawful severance offer.
    Chantz Martin, FOXNews.com, 15 Aug. 2025
Adjective
  • As savage Arctic cold was getting ready to surge south across North America, vivid imagery based on data from weather models showed us what was going to happen.
    Tom Yulsman, Discover Magazine, 27 Dec. 2022
  • The 2023 grand marshal is former Arizona Democratic congresswoman Gabby Giffords, gravely wounded in a savage mass shooting in 2011 that also killed six people.
    Los Angeles Times, Los Angeles Times, 27 Dec. 2022
Adjective
  • Accessing the code prompts recipients to provide personal and financial information, or can lead to downloading malicious software.
    Laura Daniella Sepulveda, AZCentral.com, 15 Aug. 2025
  • The best way to safeguard yourself from malicious links that install malware, potentially accessing your private information, is to have antivirus software installed on all your devices.
    Kurt Knutsson, FOXNews.com, 14 Aug. 2025
Adjective
  • Previous reports have noted his intensive training at the WWE Performance Center and his incredible physical transformation.
    Andrew Ravens‎, MSNBC Newsweek, 4 Aug. 2025
  • Young’s legacy endures – her school remains a magnet for young performers aged 10 to 16, blending the academic curriculum with intensive training in acting, singing and dance.
    Naman Ramachandran, Variety, 30 July 2025
Adjective
  • That is a particularly egregious example of how the Trump Administration has been gratuitously cruel to the Sudanese.
    Isaac Chotiner, New Yorker, 5 Aug. 2025
  • Stacy, Tim’s wife, also died of pancreatic cancer five months later in February of 2024, a cruel hand for a family that for years had gone above and beyond in their efforts to raise money and awareness for cancer research.
    Mac Cerullo, Boston Herald, 3 Aug. 2025
Adjective
  • As Wednesday processes this, the evil one-eyed crow shows up and flies off with her evidence in its beak.
    Jessica M. Goldstein, Vulture, 6 Aug. 2025
  • An avatar for good and an embodiment of evil sit face-to-face, locked in an eternal clash of wills.
    Judy Berman, Time, 5 Aug. 2025

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Cite this Entry

“Vicious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/vicious. Accessed 19 Aug. 2025.

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