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Definition of dirtynext
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dirty

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verb

dirty

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adverb

Synonym Chooser

How does the adjective dirty differ from other similar words?

Some common synonyms of dirty are filthy, foul, nasty, and squalid. While all these words mean "conspicuously unclean or impure," 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 is it sensible to use filthy instead of dirty?

The words filthy and dirty are synonyms, but do differ in nuance. Specifically, 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 could foul be used to replace dirty?

The meanings of foul and dirty largely overlap; however, 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 does the word nasty relate to other synonyms for dirty?

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

Where would squalid be a reasonable alternative to dirty?

While the synonyms squalid and dirty are close in meaning, 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 dirty
Adjective
When they were discovered Wednesday, the five men had ripped clothes and dirty faces, seemingly stunned that they had been found. Janis MacKey Frayer, NBC news, 1 June 2026 While many people focus their disinfecting efforts on surfaces that look dirty, experts say high-risk areas are actually determined by a mix of moisture, food exposure, and how often something is touched throughout the day. Caroline Lubinsky, Martha Stewart, 1 June 2026
Verb
Keep them in reserve as a sleep sock to ward off icy toes and prevent sweat and skin oils from dirtying your down sleeping bag. Adam Roy, Outside, 28 Dec. 2025 Garments can be dirtied again by the elements if air-dried outside. Mary Cornetta, Better Homes & Gardens, 20 Dec. 2025 See All Example Sentences for dirty
Recent Examples of Synonyms for dirty
Adjective
  • The president had complained about filthy water and a leaking foundation, according to previous USA TODAY reporting.
    Michelle Del Rey, USA Today, 3 June 2026
  • And some of the best evidence of the lovebugs’ comeback came last week at the Turkey Lake Service Plaza on Florida’s Turnpike, where filthy, splattered cars and trucks queued up before the plaza’s automatic windshield washer.
    Martin E. Comas, The Orlando Sentinel, 27 May 2026
Adjective
  • It was seized by the post office (as Rosset had expected) and duly declared obscene by the postmaster of the city of New York, a man named Robert Christenberry.
    Louis Menand, New Yorker, 1 June 2026
  • Who says a man can’t appreciate the gleaming, obscene form of an Aston Martin supercar or the growl of its overpriced engine?
    Alex James Kane, Forbes.com, 31 May 2026
Adjective
  • Getty Images The Philadelphia Phillies have spent the last several weeks playing like a club determined to erase the disappointment of a turbulent first half.
    Peter Chawaga, Forbes.com, 6 June 2026
  • As the investigation progresses in this four-part docuseries, Stephen reveals the turbulent family dynamics that shaped his childhood, including his father Ron — a violent Vietnam War vet grappling with PTSD — and his mother, Margie, who divorced Ron in the '90s.
    James Mercadante, Entertainment Weekly, 4 June 2026
Adjective
  • Cenac lacks efficiency and foul discipline at times — a weakness that was on display in the NCAA Tournament — but also has shown the potential to dominate the paint both as a defender and a scorer.
    Julia Poe, Chicago Tribune, 6 June 2026
  • Smith then lined the two-run homer just inside the foul pole in left field.
    CBS News, CBS News, 6 June 2026
Adjective
  • Flu season may be mostly behind us, but a nasty, highly contagious stomach bug is rising.
    NBC news, NBC news, 29 May 2026
  • Rhaenyra is suddenly dealing with internal criticism, possible rebellions, subjects spray-painting nasty stuff on the walls and self-doubt.
    Bryan Alexander, USA Today, 29 May 2026
Adjective
  • Strained by tighter budgets and product price increases, more shoppers are willing to ditch their favorite brand for a cheaper alternative, a new study finds.
    Betty Lin-Fisher, USA Today, 29 May 2026
  • The simpler, cheaper, more snow-friendly autonomous driving hardware is welcome, too.
    Andrew Nusca, Fortune, 29 May 2026
Adjective
  • Beef’s whole thing is finding the weak, corruptible center of all its characters, and Isaac jumps into that project with enthusiasm.
    Joe Reid, Vulture, 2 May 2026
  • From fragmented records to corruptible datasets and the general noise across social media, agentic systems are facing a trust and truth crisis at the most fundamental level.
    Lawrence Wintermeyer, Forbes.com, 11 Sep. 2025
Verb
  • But staining showed no RNA or DNA molecules, indicating that the cells were definitely dead.
    Siddhant Pusdekar, Quanta Magazine, 1 June 2026
  • The Bruins’ bat boy’s tears stained the front of Cholowsky’s jersey as his sobs grew heavier by the second.
    Ira Gorawara, New York Times, 1 June 2026

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Cite this Entry

“Dirty.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/dirty. Accessed 8 Jun. 2026.

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