filthiness 1 of 3

Definition of filthinessnext
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filthy

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adjective

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filthy

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adverb

Synonym Chooser

How does the adjective filthy differ from other similar words?

Some common synonyms of filthy are dirty, foul, nasty, and squalid. While all these words mean "conspicuously unclean or impure," 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

When might dirty be a better fit than filthy?

In some situations, the words dirty and filthy are roughly equivalent. However, 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 would foul be a good substitute for filthy?

The words foul and filthy are synonyms, but do differ in nuance. Specifically, 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

How is nasty related to other words for filthy?

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

In what contexts can squalid take the place of filthy?

The synonyms squalid and filthy are sometimes interchangeable, but 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

How does the adjective filthy differ from other similar words?

Some common synonyms of filthy are dirty, foul, nasty, and squalid. While all these words mean "conspicuously unclean or impure," 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

When might dirty be a better fit than filthy?

In some situations, the words dirty and filthy are roughly equivalent. However, 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 would foul be a good substitute for filthy?

The words foul and filthy are synonyms, but do differ in nuance. Specifically, 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

How is nasty related to other words for filthy?

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

In what contexts can squalid take the place of filthy?

The synonyms squalid and filthy are sometimes interchangeable, but 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 filthiness
Adjective
But there’s a difference between a dirty deal and a filthy deal. NBC news, 15 Mar. 2026 Toki died waiting in a filthy, crumbling tank at one of the oldest marine parks in the world. Valerie Greene, The Orlando Sentinel, 14 Mar. 2026 Her jeans are filthy; her blonde hair hangs in loose, greasy strings; bruises speckle her thin arms, and there’s a patch of blood above her right eye. Outside, 10 Mar. 2026 Allegations of betting on suicide Like other detainees, Ramsingh said that between cleanings, the rooms, restrooms and showers were often filthy and infested with insects. Morgan Lee, Los Angeles Times, 8 Mar. 2026 See All Example Sentences for filthiness
Recent Examples of Synonyms for filthiness
Noun
  • If an exclamation point only signified gore and grossness, this gothic rock opera would more than qualify.
    Rachel Simon, Vulture, 6 Mar. 2026
  • The characters’ propensity for ugly faces, silliness and a bit of grossness too, stems from the portrayals of girlhood and young womanhood that appeal to them.
    Carlos Aguilar, Los Angeles Times, 4 Mar. 2026
Adjective
  • The legislation would require social media platforms to estimate the age of users and exclude obscene content to children 16 years old or younger.
    Angela Palermo, Idaho Statesman, 2 Apr. 2026
  • The use of obscene or indecent clothing or signs will result in expulsion.
    Ed Masley, AZCentral.com, 31 Mar. 2026
Adjective
  • The five fabulous transfers who make up coach Dusty May’s starting lineup got down and dirty with the rest of the Wolverines to dig out the national championship on Monday.
    Senior Editor, Los Angeles Times, 7 Apr. 2026
  • And speaking of windows, Wiseman said that the windows of Orion are already dirty because the crew enjoyed looking out of them so much.
    Jacopo Prisco, CNN Money, 7 Apr. 2026
Adverb
  • That can be attributed to the fact that Rolex models were already highly valued in 2018 and were also in extremely high demand during the pandemic.
    Rachel Cormack, Robb Report, 2 Apr. 2026
  • Almost all natural bodies of water bear fish life, with the exception of very hot thermal ponds and extremely salt-alkaline lakes, such as the Dead Sea in Asia and the Great Salt Lake in North America.
    Encyclopedia Britannica, Encyclopedia Britannica, 2 Apr. 2026
Noun
  • The values are different now, the lifestyles, the accepted vulgarity, the manners, the view of what’s patriotic and what’s not, the concept of service.
    Literary Hub, Literary Hub, 3 Apr. 2026
  • It is hoped that political ad campaigns would aim to lessen the meanness and divisiveness and vulgarity that have damaged our democracy.
    Chicago Tribune, Chicago Tribune, 25 Feb. 2026
Noun
  • For a young team learning to stick up for each other, Mangiapane brings a needed dirtiness to the Hawks.
    Kalen Lumpkins, Chicago Tribune, 14 Mar. 2026
  • When assessing a hat's dirtiness, look for visible stains or sweat marks and treat only those areas with a soft, damp cloth and detergent rather than washing the entire hat.
    Olivia McIntosh, Martha Stewart, 8 Feb. 2026
Adjective
  • One day, Dahlstrom made a vulgar joke in a lunchroom referencing oral sex and pubic hair, according to the employee.
    Nick Ferraro, Twin Cities, 4 Apr. 2026
  • Doncic claimed Bitadze directed a vulgar comment about Doncic’s family in Serbian toward the Lakers star guard.
    Broderick Turner, Los Angeles Times, 28 Mar. 2026
Adjective
  • Cape Canaveral is no dusty history tour.
    Maureen O'Hare, CNN Money, 4 Apr. 2026
  • No amount of inner toughness would have convinced a customer to bring in a dusty rug in May 2020.
    Big Think, Big Think, 31 Mar. 2026

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Cite this Entry

“Filthiness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/filthiness. Accessed 9 Apr. 2026.

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