filthy 1 of 2

adjective

ˈfil-thē How to pronounce filthy (audio)
Definition of filthynext
1
as in obscene
depicting or referring to sexual matters in a way that is unacceptable in polite society you cannot use such filthy language on the public airwaves

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms
2
as in dirty
not clean you can't go to the concert unless you clean this filthy room first

Synonyms & Similar Words

Antonyms & Near Antonyms

filthy

2 of 2

adverb

as in extremely
to a great degree the invention made him filthy rich

Synonyms & Similar Words

Antonyms & Near Antonyms

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
His greatest series let people see a character who has revealed the filthiest, most shameful parts of themselves, and imagine them as a mirror. — Ct Jones, Rolling Stone, 8 Aug. 2026 Also in July, following a tenant’s eviction, the NYPD and ASPCA discovered nine dead cats inside the filthy, unkempt Queens apartment. — Emma Seiwell, New York Daily News, 7 Aug. 2026 Cleaning our planet’s filthy ports could one day get a boost from a creature with a very messy nickname. — Laura Baisas, Popular Science, 30 July 2026 The language used in this book is often vile, at times so filthy that the publishers have been compelled to resort to the dash, a device seldom employed in these unsqueamish days. — Literary Hub, 23 July 2026 See All Example Sentences for filthy
Recent Examples of Synonyms for filthy
  1. obscene
  2. dirty
  3. extremely
  4. vulgar
  5. dusty
  6. very
  7. pornographic
  8. stained
Adjective
  • More than 3,000 shows and a sizable cult following later, The Dark Room has evolved into a choose-your-own-adventure live action video game, presided over by Robertson as its obscene, merciless and incredibly quick-witted host.
    — Rebecca Rosman, NPR, 31 Aug. 2026
  • The law is aimed at prohibiting children from obtaining books and movies with obscene content.
    — Joseph Flaherty, Arkansas Online, 28 Aug. 2026
Definition of obscene
Adjective
  • The dogs, according to the charges, had dirty water and their fur was stained with urine and feces.
    — Post-Tribune, Chicago Tribune, 31 Aug. 2026
  • Fourth, the handle needed to be patterned for a secure grip even in dirty, wet conditions, so checkering or deep ribbing was added to the alloy metal.
    — David Szondy August 30, New Atlas, 30 Aug. 2026
Definition of dirty
Adverb
  • This pre-seasoned, ¼ inch thick steel heat extremely evenly with minimal disparity between the center and edges.
    — Adam Campbell-Schmitt, Bon Appetit Magazine, 31 Aug. 2026
  • Search for jet quenching Previous experiments suggest that a millionth of a second after the Big Bang, even as temperatures remained extremely high, matter did not behave like gas but instead like liquid with very low viscosity.
    — Ameya Paleja, Interesting Engineering, 31 Aug. 2026
Definition of extremely
Adjective
  • But the school’s dress code prohibits messages that are lewd, indecent, vulgar or profane.
    — Maureen Groppe, USA Today, 1 Aug. 2026
  • Lonnie is loud, obnoxious, and vulgar in ways that rankle traditional golfers.
    — Ben Travers, IndieWire, 16 July 2026
Definition of vulgar
Adjective
  • One Baguette is covered in a kaleidoscopic geometric pattern of colorful beads; another resembles a tiny textile artwork in dusty pink, green, and turquoise.
    — Lilah Ramzi, Vogue, 3 Sep. 2026
  • One rises, then another, then seemingly all of them—great striped bulbs of crimson, lemon yellow, and turquoise drifting between the fairy chimneys as the first sunlight catches the dusty pink folds of the landscape.
    — Scott Campbell, Condé Nast Traveler, 2 Sep. 2026
Definition of dusty
Adverb
  • The artists at The Library Show paid The Garage’s proposed no Milwaukee rap very little mind.
    — Caden Perry, jsonline.com, 4 Sep. 2026
  • Films can change the world, or at the very least, the people who walk it.
    — Marshall Shaffer, IndieWire, 3 Sep. 2026
Definition of very
Adjective
  • The sheriff’s office said Ahlers had hundreds, and possibly thousands, of pornographic photos and videos of children on his hard drive.
    — Steven Walker, The Orlando Sentinel, 24 Aug. 2026
  • The employees also sent pornographic magazines with David Steiner’s name to a neighbor’s home and planned to install a GPS device on the couple’s car.
    — Leah Willingham, Los Angeles Times, 29 July 2026
Definition of pornographic
Adjective
  • How To Deep Clean Stained Wood Baseboards For stained wood baseboards, Matthews advises dusting using a dry microfiber cloth and Murphy’s Oil or a wood cleaning oil (remove excessive dirt and crumbs with a vacuum cleaner first).
    — Daley Quinn, Southern Living, 19 Aug. 2026
  • The stained glass above the front door had fallen into the street, held up only by a single cord.
    — Eleanor Nash, Kansas City Star, 19 Aug. 2026
Definition of stained

Browse Nearby Words

filthiness
filthy
fin
See all Nearby Words

Cite this Entry

“Filthy.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/filthy. Accessed 4 Sep. 2026.

Copy Citation
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster

Word of the Day

Listen to the pronunciation of apiary

See Definitions and Examples »

Popular in Grammar & Usage

See More

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

A List of Most Commonly Confused Words

Why do we use apostrophes to show possession?

Is it 'nerve-racking' or 'nerve-wracking'?

What's the difference between 'fascism' and 'socialism'?
See More

Popular in Wordplay

See More

The Longest Long Words List

Stay Woke

Ye Olde Nincompoop: Old-Fashioned Words for 'Stupid'

14 Phobias You Probably Haven't Heard Of

The Words of the Week - Sept. 4
See More

Popular

See More

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

The Longest Long Words List

Stay Woke
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
anagrams on a chalk board
Word Builder Quiz Vol. 2 Pick the letter that when added to a word will ma...
See All