as in evil
not conforming to a high moral standard; morally unacceptable the chaste heroines and nefarious villains of old-time melodramas

Synonyms & Similar Words

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Antonyms & Near Antonyms

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How does the adjective nefarious differ from other similar words?

Some common synonyms of nefarious are corrupt, degenerate, iniquitous, vicious, and villainous. While all these words mean "highly reprehensible or offensive in character, nature, or conduct," nefarious suggests flagrant breaching of time-honored laws and traditions of conduct.

the nefarious rackets of organized crime

Where would corrupt be a reasonable alternative to nefarious?

While in some cases nearly identical to nefarious, corrupt stresses a loss of moral integrity or probity causing betrayal of principle or sworn obligations.

city hall was rife with corrupt politicians

When could degenerate be used to replace nefarious?

In some situations, the words degenerate and nefarious are roughly equivalent. However, degenerate suggests having sunk to an especially vicious or enervated condition.

a degenerate regime propped up by foreign powers

When can iniquitous be used instead of nefarious?

The words iniquitous and nefarious are synonyms, but do differ in nuance. Specifically, iniquitous implies absence of all signs of justice or fairness.

an iniquitous system of taxation

When might vicious be a better fit than nefarious?

The meanings of vicious and nefarious largely overlap; however, vicious may directly oppose virtuous in implying moral depravity, or may connote malignancy, cruelty, or destructive violence.

a vicious gangster

When would villainous be a good substitute for nefarious?

While the synonyms villainous and nefarious are close in meaning, 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 nefarious What will nefarious government agents do to get their hands on it? David Leonhardt, New York Times, 18 Jan. 2025 The concept, however, deepened and really found its emotional core when the conversation turned toward an equally nefarious, much more familial kind of illness. Nick Romano, EW.com, 17 Jan. 2025 The premise of the series was that a nefarious, behemoth corporation named Lumon Industries had pioneered a way to protect its most valuable proprietary data—by placing a chip in certain employees’ brains that severed their work selves from their real identities. Sophie Gilbert, The Atlantic, 17 Jan. 2025 However, remnants of this catastrophe still plague the world, and nefarious happenings behind the scenes are poised to plunge it back into chaos. PCMAG, 13 Jan. 2025 See all Example Sentences for nefarious 
Recent Examples of Synonyms for nefarious
Adjective
  • In defense of my actions, as a general rule, mother-of-the-bride dresses are evil monstrosities.
    Sherry Kuehl, Kansas City Star, 29 Jan. 2025
  • One of the most recognizable celebrations is lion dance troupes, a dramatic tradition meant to usher in the New Year and expel evil spirits.
    Eric Lagatta, USA TODAY, 29 Jan. 2025
Adjective
  • The aim was to see how institutions — both public and private — would react to a president giving unlawful or unethical orders.
    Byron Tau, Los Angeles Times, 23 Jan. 2025
  • He was charged with second-degree assault, first-degree reckless endangerment and unlawful discharge.
    Staff report, Hartford Courant, 23 Jan. 2025
Adjective
  • The trial culminated in the dramatic display of her thong before the jury, paired with descriptions of her as manipulative and immoral.
    Kristen Waggoner, Newsweek, 21 Jan. 2025
  • Growing shares in each party describe those in the other party as more closed-minded, dishonest, immoral and unintelligent than other Americans.
    NBC News, NBC News, 22 Dec. 2024
Adjective
  • And in this case, there’s nothing more sinful than talking about LeBron James trades.
    Dan Woike, Los Angeles Times, 12 Dec. 2024
  • But it also was forged from a particular kind of alchemy that separates a sinful holiday confection from a sugar-sodden mess.
    Brenna Ehrlich, Rolling Stone, 19 Nov. 2024
Adjective
  • Social media lit up with outrage directed toward Jubilee for giving voice to a vicious troll.
    Spencer Kornhaber, The Atlantic, 23 Jan. 2025
  • The roughest angle to imposter syndrome seems to be a potentially vicious cycle that can ensue.
    Lance Eliot, Forbes, 23 Jan. 2025
Adjective
  • Alexander Basara and his fiancée, Ally Keller, attended Sunday’s game in Philadelphia, but their experience supporting their team was soured when an Eagles fan, identified as Ryan Caldwell, lashed out at Keller and Basara in a vile tirade.
    Paulina Dedaj, Fox News, 17 Jan. 2025
  • The vile act prompted Hodges to snatch a plastic bottle and hurl it at the suspect, who dodged the drink and then drew a knife, the deli worker said.
    Thomas Tracy, New York Daily News, 3 Jan. 2025
Adjective
  • The Hughes Fire broke out in the late morning and within hours charred more than 15 square miles of trees and brush, sending up plumes of dark smoke near Lake Castaic, a popular recreation area about 40 miles from the devastating Eaton and Palisades fires that are burning for a third week.
    Marcio Jose Sanchez, Chicago Tribune, 22 Jan. 2025
  • The popular hangout also specializes in dark lagers and hoppy IPAs.
    Brad Japhe, Travel + Leisure, 22 Jan. 2025
Adjective
  • In fact, consistently beating the S&P 500 — in good times and bad — has been difficult over recent years for individual stocks; for heavyweights in the Consumer Staples sector including PG, CL, and KMB, and even for the megacap stars GOOG, TSLA, and MSFT.
    Trefis Team, Forbes, 23 Jan. 2025
  • Here are five foods that are technically ultra-processed but aren’t as bad for you as others.
    Sarah Garone, Health, 23 Jan. 2025

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Thesaurus Entries Near nefarious

Cite this Entry

“Nefarious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/nefarious. Accessed 1 Feb. 2025.

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