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foul

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verb

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Synonym Chooser

How does the adjective foul differ from other similar words?

Some common synonyms of foul are dirty, filthy, nasty, and squalid. While all these words mean "conspicuously unclean or impure," foul implies extreme offensiveness and an accumulation of what is rotten or stinking; it can also describe, for example, loathsome behavior.

a foul-smelling open sewer
a foul story of lust and greed

When can dirty be used instead of foul?

Although the words dirty and foul have much in common, dirty emphasizes the presence of dirt more than an emotional reaction to it or, figuratively, stresses meanness or despicableness.

a dirty littered street
don't ask me to do your dirty work

When could filthy be used to replace foul?

The meanings of filthy and foul largely overlap; however, filthy carries a strong suggestion of offensiveness and typically of gradually accumulated dirt that begrimes and besmears. Figuratively, it can also describe disgusting obscenity.

a stained greasy floor, utterly filthy
filthy street language

How is nasty related to other words for foul?

Nasty applies to what is actually foul or is repugnant to one expecting freshness, cleanliness, or sweetness; in practice, however, nasty is often weakened to the point of being no more than a synonym of unpleasant or disagreeable. When used figuratively, nasty implies a peculiarly offensive unpleasantness.

it's a nasty job to clean up after a sick cat
had a nasty fall
his answer gave her a nasty shock
a stand-up comedian known for nasty humor

When would squalid be a good substitute for foul?

In some situations, the words squalid and foul are roughly equivalent. However, squalid adds to the idea of dirtiness and filth that of slovenly neglect. Distinctively, its figurative use implies sordidness as well as baseness and dirtiness.

squalid slums
engaged in a series of squalid affairs

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 foul
Adjective
Ninety-four million people across the northern U.S. from the Plains to the Great Lakes as well as the Northeast were under winter weather alerts Saturday night, as a fast-moving storm threatened to foul roads and create dangerous, icy conditions from the Dakotas to Maine. Evan Bush, NBC News, 8 Feb. 2025 The combination of pitted skin and foul odor is usually enough for a provider to tell the difference between pitted keratolysis and other similar foot conditions. Sarah Bradley, Health, 6 Feb. 2025
Verb
Donovan Mitchell missed a 3 and Allen fouled Şengün on the rebound with 4.5 seconds left. Kelly Iko, The Athletic, 22 Jan. 2025 In a zany game that featured promotions like a penalty box for fouling players, doubled point values during specific stretches of the game and a 4-point line, Team Bonds won 66-55. Christian Babcock, The Mercury News, 15 Feb. 2025 See All Example Sentences for foul
Recent Examples of Synonyms for foul
Adjective
  • The 1999 killing Syed and Lee both attended Woodlawn High School and had dated, broken up, reunited and broken up again in a relationship an appeals court described as turbulent.
    Chloe Atkins, NBC News, 27 Feb. 2025
  • His childhood was turbulent—his parents' frequent fights sometimes turned physical, with his father directing his frustrations at young Gene.
    David Faris, Newsweek, 27 Feb. 2025
Adjective
  • California Representative Sara Jacobs countered that targeting transgender kids for political gain is what's truly unfair.
    Tommy Tuberville, Newsweek, 7 Mar. 2025
  • From holding major banks accountable for unfair practices to strengthening regulations that ensure fair access to credit, the CFPB has been a pillar of financial justice, particularly for Black, Latino, and low-income communities whom predatory financial institutions often target.
    Lenwood V. Long, Sr., Forbes, 7 Mar. 2025
Adjective
  • The desire to avoid portraying her character’s actions as simply disgusting led de Van to play the lead role herself, in spite of the challenges that created for her as a first-time feature director.
    Jim Hemphill, IndieWire, 27 Feb. 2025
  • Selena Gomez has called out 'disgusting' weight shame As a former child star who grew up in the public eye, Gomez has long been subjected to conversations surrounding her weight.
    Jay Stahl, USA TODAY, 27 Feb. 2025
Adjective
  • According to the American Civil Liberties Union (ACLU), individuals may not block access to sidewalks or buildings, disrupt counterprotests, or engage in speech that is obscene, makes knowingly false statements of fact, or incites immediate violence or dangerous disturbances.
    Thomas G. Moukawsher, Newsweek, 5 Mar. 2025
  • There is absolutely nothing in libraries across the state that is obscene.
    Laura Tillman, Hartford Courant, 27 Feb. 2025
Adjective
  • This is about a team with a top-10 payroll whose GM committed too stinking much of it to dogs that can’t, or won’t, pull the sled.
    Sean Keeler, The Denver Post, 22 Dec. 2019
  • Muttaiah said the man inside the stinking manhole was working without any safety equipment — no gloves, no shoes, no supplemental oxygen.
    Joanna Slater, Washington Post, 16 Dec. 2019
Adjective
  • Impacted national park and forest employees say fewer workers will lead to longer lines, filthy bathrooms and unsafe hiking and camping conditions at America's precious public lands.
    Marlene Lenthang, NBC News, 24 Feb. 2025
  • Between sweat, body oils, dust, dirt, hair, and grime, yoga mats, weights, and treadmills can get pretty filthy.
    Maria Sabella, Better Homes & Gardens, 11 Feb. 2025
Verb
  • Grease dirtied the handles of the ovens, the microwave ovens and the coolers.
    David J. Neal, Miami Herald, 14 Feb. 2025
  • Instead of dirtying a larger pot for your supporting dishes, this quaint cooker will come in handy for quick (or slower simmering) concoctions while matching your kitchen atmosphere.
    Sophia Beams, Better Homes & Gardens, 14 Jan. 2025
Verb
  • The dresser is GreenGuard approved, meaning it’s been screened for more than 10,000 chemicals known to pollute indoor air.
    Christopher Murray, Fox News, 28 Feb. 2025
  • Since fast fashion exists to keep up with rapidly changing trends, a striking 85% of clothes end up in landfills every year, polluting the environment.
    Grace Butler, USA TODAY, 14 Feb. 2025

Browse Nearby Words

Cite this Entry

“Foul.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/foul. Accessed 13 Mar. 2025.

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