a. | 1. | Defiled with filth, whether material or moral; nasty; dirty; polluted; foul; impure; obscene. |
Adj. | 1. | filthy - disgustingly dirty; filled or smeared with offensive matter; "as filthy as a pigsty"; "a foul pond"; "a nasty pigsty of a room" |
2. | filthy - vile; despicable; "a dirty (or lousy) trick"; "a filthy traitor" | |
3. | filthy - thoroughly unpleasant; "filthy (or foul or nasty or vile) weather we're having" | |
4. | filthy - characterized by obscenity; "had a filthy mouth"; "foul language"; "smutty jokes" |