Antonyms of adj filthy

3 senses of filthy

Sense 1
filthy, foul, nasty -- (disgustingly dirty; filled or smeared with offensive matter; "as filthy as a pigsty"; "a foul pond"; "a nasty pigsty of a room")

INDIRECT (VIA dirty) -> clean -- (free from dirt or impurities; or having clean habits; "children with clean shining faces"; "clean white shirts"; "clean dishes"; "a spotlessly clean house"; "cats are clean animals")

Sense 2
dirty, filthy, lousy -- (vile; despicable; "a dirty (or lousy) trick"; "a filthy traitor")

INDIRECT (VIA nasty) -> nice -- (pleasant or pleasing or agreeable in nature or appearance; "what a nice fellow you are and we all thought you so nasty"- George Meredith; "nice manners"; "a nice dress"; "a nice face"; "a nice day"; "had a nice time at the party"; "the corn and tomatoes are nice today")

Sense 3
cruddy, filthy, foul, nasty, smutty -- (characterized by obscenity; "had a filthy mouth"; "foul language"; "smutty jokes")

INDIRECT (VIA dirty) -> clean, unobjectionable -- ((of behavior or especially language) free from objectionable elements; fit for all observers; "good clean fun"; "a clean joke")

Similarity of adj filthy

3 senses of filthy

Sense 1
filthy, foul, nasty -- (disgustingly dirty; filled or smeared with offensive matter; "as filthy as a pigsty"; "a foul pond"; "a nasty pigsty of a room")
       => dirty (vs. clean), soiled, unclean -- (soiled or likely to soil with dirt or grime; "dirty unswept sidewalks"; "a child in dirty overalls"; "dirty slums"; "piles of dirty dishes"; "put his dirty feet on the clean sheet"; "wore an unclean shirt"; "mining is a dirty job"; "Cinderella did the dirty work while her sisters preened themselves")

Sense 2
dirty, filthy, lousy -- (vile; despicable; "a dirty (or lousy) trick"; "a filthy traitor")
       => nasty (vs. nice), awful -- (offensive or even (of persons) malicious; "in a nasty mood"; "a nasty accident"; "a nasty shock"; "a nasty smell"; "a nasty trick to pull"; "Will he say nasty things at my funeral?"- Ezra Pound)

Sense 3
cruddy, filthy, foul, nasty, smutty -- (characterized by obscenity; "had a filthy mouth"; "foul language"; "smutty jokes")
       => dirty (vs. clean) -- ((of behavior or especially language) characterized by obscenity or indecency; "dirty words"; "a dirty old man"; "dirty books and movies"; "boys telling dirty jokes"; "has a dirty mouth")