adjective \ ˈfil-thē \
Updated on: 18 Mar 2018

Definition of filthy

filthier; filthiest
1 : covered with, containing, or characterized by filth
  • filthy streets
  • filthy dishes
2 a : underhand, vile
b : obscene
  • filthy language


play \ˈfil-thə-lē\ adverb


play \ˈfil-thē-nəs\ noun

Examples of filthy in a Sentence

  1. She's in a filthy mood.

  2. you simply cannot use such filthy language on the public airwaves

Recent Examples of filthy from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'filthy.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of filthy

14th century

Synonym Discussion of filthy

dirty, filthy, foul, nasty, squalid mean conspicuously unclean or impure. dirty emphasizes the presence of dirt more than an emotional reaction to it.
    • a dirty littered street
filthy carries a strong suggestion of offensiveness and typically of gradually accumulated dirt that begrimes and besmears.
    • a stained greasy floor, utterly filthy
foul implies extreme offensiveness and an accumulation of what is rotten or stinking.
    • a foul-smelling open sewer
nasty applies to what is actually foul or is repugnant to one expecting freshness, cleanliness, or sweetness.
    • it's a nasty job to clean up after a sick cat
In practice, nasty is often weakened to the point of being no more than a synonym of unpleasant or disagreeable.
    • had a nasty fall
    • his answer gave her a nasty shock
squalid adds to the idea of dirtiness and filth that of slovenly neglect.
    • squalid slums
All these terms are also applicable to moral uncleanness or baseness or obscenity. dirty then stresses meanness or despicableness
    • don't ask me to do your dirty work
, while filthy and foul describe disgusting obscenity or loathsome behavior
    • filthy street language
    • a foul story of lust and greed
, and nasty implies a peculiarly offensive unpleasantness.
    • a stand-up comedian known for nasty humor
Distinctively, squalid implies sordidness as well as baseness and dirtiness.
    • engaged in a series of squalid affairs




Definition of filthy

1 : in a filthy manner
  • filthy dirty
2 : very, exceedingly
  • filthy rich

Examples of filthy in a Sentence

  1. grew up filthy poor and hated every minute of it

First Known Use of filthy


FILTHY Defined for English Language Learners


Definition of filthy for English Language Learners

  • : very dirty

  • : very offensive or disgusting and usually about sex

  • : very evil : morally wrong

FILTHY Defined for Kids


adjective \ ˈfil-thē \

Definition of filthy for Students

filthier; filthiest
: extremely dirty



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mournful or dismal

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