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 Verity dwells almost entirely in the gulf between the front-facing celeb being interviewed by Alex Cooper and the vicious private thoughts of her confession. — Bethy Squires, Vulture, 5 Oct. 2026 The fifth-year guard went up strong at the rim a few times, including once for a vicious transition dunk that was contested by multiple Jazz defenders. — Bennett Durando, Denver Post, 4 Oct. 2026 This creates a vicious cycle in which each new arrangement leaves Brazil with less room to maneuver and makes subsequent deals even more difficult. — Matias Spektor, Foreign Affairs, 2 Oct. 2026 Some monetary relief may be on the horizon for Chris Brown, found liable earlier this year for a vicious dog attack in 2020 that left a housekeeper working at his Tarzana home hospitalized with injuries to her face, arm and leg. — Alexandra Del Rosario, Los Angeles Times, 30 Sep. 2026 See All Example Sentences for vicious
Recent Examples of Synonyms for vicious
Adjective
  • Pike committed the crime over an intense romantic jealousy of Slemmer, who allegedly attempted to steal her boyfriend’s attention.
    — David Zimmermann, The Washington Examiner, 13 Oct. 2026
  • Carnegie Hall seats well over 3,000 people, but this intense, no-frills performance film gives life to the old saying about feeling alone in a crowd.
    — Damon Wise, Deadline, 13 Oct. 2026
Adjective
  • Buccaneers head coach Todd Bowles is fighting for his job security after a brutal start to the season.
    — Scott Thompson OutKick, FOXNews.com, 9 Oct. 2026
  • There’s the brutal heat; the skin destroying UV-rays of that miserable, scorching, eye-blinding sun; the constant allergy/sinusitis issues that NEVER let up; the smothering humidity.
    — R. Eric Thomas, Washington Post, 8 Oct. 2026
Adjective
  • The next year Williams was charged in the Southern District of Iowa for unlawful flight to avoid prosecution in the kidnapping case.
    — Breaking News, Los Angeles Times, 10 Oct. 2026
  • Federal authorities later charged him with unlawful flight to avoid prosecution.
    — Greg Wehner, FOXNews.com, 9 Oct. 2026
Adjective
  • The Indian pilot who fought off a savage attack by his copilot and helped prevent an apparent hijack of a Flydubai plane heading to Israel with more than 170 people on board is being hailed as a hero.
    — Rhea Mogul, CNN Money, 1 Oct. 2026
  • 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
Adjective
  • Strong antivirus software can help protect against malicious links, phishing sites and malware that may appear alongside these scams.
    — Kurt Knutsson, FOXNews.com, 8 Oct. 2026
  • Tech companies are playing whack-a-mole around the world as their models get up to more hijinks and are used for malicious purposes.
    — J.D. Capelouto, semafor.com, 7 Oct. 2026
Adjective
  • The Reaveys spent Callum’s early years performing their own intensive physical and speech therapies with him, determined their son would roll over, crawl, and learn to say his name.
    — Deepa Fernandes, STAT, 8 Oct. 2026
  • These are intensive oral sessions with examiners that are designed to test quick problem-solving and reveal knowledge depth.
    — Reynald Fasciaux, Fortune, 8 Oct. 2026
Adjective
  • The offbeat, cruel cadence of the bit reminded me of classic Update Norm Macdonald.
    — Charu Sinha, Vulture, 11 Oct. 2026
  • The misery of the situation could feel overwhelming, even cruel, but Cahyono’s observation of Sumiati’s struggles is humane and sympathetic.
    — Kambole Campbell, Variety, 10 Oct. 2026
Adjective
  • Declonius Peck, its beloved editor-in-chief, has gone to prison for embezzlement, and his evil twin, Salton, has assumed management of the family business, along with the 39 editors who curate the periodical.
    — Leigh Haber, Los Angeles Times, 13 Oct. 2026
  • The film focuses on Merry, the first witch born on Christmas Day, who must defeat a coven of evil witches that has kidnapped Santa Claus in a bid to destroy Christmas.
    — Corbin Bolies, Variety, 12 Oct. 2026

Browse Nearby Words

Cite this Entry

“Vicious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/vicious. Accessed 16 Oct. 2026.

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