Definition of filthynext
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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

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 filthy
Adjective
That praise rings true more than a decade later thanks to joke after filthy joke, cameo after foul-mouthed cameo, scare after genuine scare. — Sara Netzley, Entertainment Weekly, 11 Sep. 2026 People were filthy in so many ways, so Mike really wrote that in. — Ben Travers, IndieWire, 20 Aug. 2026 While sinks can become filthy from soap splatters and dirty hands, toilets need cleaning for very different reasons. — Karen Brewer Grossman, Southern Living, 17 Aug. 2026 The game starts with a flashback 30 years ago to a feral, filthy Wolverine who’s living alone in the wilderness. — Jordan Moreau, Variety, 13 Aug. 2026 See All Example Sentences for filthy
Recent Examples of Synonyms for filthy
Adjective
  • The disingenuous campaign ads, the obscene amount of money that is spent to air them and the promises that are rarely fulfilled are enough to make one cynical.
    — Cal Thomas, Arkansas Online, 6 Oct. 2026
  • The public must contend head-on with a collapsing currency and runaway inflation, and to ordinary Iranians, describing the present situation as sustainable would sound almost obscene.
    — Ali Vaez, Foreign Affairs, 29 Sep. 2026
Adjective
  • Walls around the three-sinks are dirty in the ware-washing area.
    — Arkansas Online, Arkansas Online, 12 Oct. 2026
  • Postwar Hiroshima was a popular setting for these movie gangsters, who fought dirty, had no use for the old ceremonies, and wore flashy suits and aviator shades.
    — Ian Buruma, New Yorker, 12 Oct. 2026
Adverb
  • Experts attribute the extremely warm ocean temperatures that fueled Rachel, which peaked as a Category 3 hurricane, in part to El Niño.
    — Noah Haggerty, Los Angeles Times, 12 Oct. 2026
  • All this makes the Home app very easy to use, but extremely underpowered.
    — Jennifer Pattison Tuohy, The Verge, 12 Oct. 2026
Adjective
  • Continue reading … SOUR NOTE — Hayley Williams unleashes vulgar insult at DHS after agency defends ICE officers.
    — , FOXNews.com, 12 Oct. 2026
  • This has made some machine translations comically inaccurate, sometimes turning innocuous words into vulgar references in English.
    — Mohammed Sergie, semafor.com, 8 Oct. 2026
Adjective
  • The production is a rattling junk drawer of circuit-bent thrift-store keyboards, dusty drum machines, and unintuitive loops, and KTO combines them into head-scratching, shouldn’t-work grooves.
    — Dash Lewis, Pitchfork, 15 Oct. 2026
  • Coming up from the intertidal, out of the dusty salt wind with his latest find under one arm, Tennent met a woman on her way down.
    — Literary Hub, Literary Hub, 15 Oct. 2026
Adverb
  • One of the other things that Claude noticed was that these array of associated reverse transcriptases seem to be isolated to jumbo phages, which have very large genomes for bacteriophage.
    — Adam Kovac, Scientific American, 14 Oct. 2026
  • There’s very few cases where a fan actually gets to stand beside the man and add onto the man’s legacy.
    — Christine Imarenezor, VIBE.com, 13 Oct. 2026
Adjective
  • On the day of the $50 million demand, a WeChat chat on one of her phones shows pornographic images arriving and being sent back with Victim-1’s face grafted on, the complaint says.
    — Catherina Gioino, Fortune, 16 Oct. 2026
  • The filing follows a separate legal battle launched by Meloni in 2024 against a man accused of creating and posting deepfake pornographic images using her likeness.
    — ABC News, ABC News, 5 Oct. 2026
Adjective
  • Set your iron to its lowest setting—no steam—and place the stained area between two paper towels or lint-free cloths.
    — Alexandra Emanuelli, Southern Living, 26 Sep. 2026
  • Pushing those briars aside revealed a single splinter of stained glass, bright as a ruby and warm as blood.
    — Literary Hub, Literary Hub, 22 Sep. 2026

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Cite this Entry

“Filthy.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/filthy. Accessed 18 Oct. 2026.

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