[syn: cruddy, filthy, foul, nasty, smutty]
The Collaborative International Dictionary of English v.0.48:
Filthy \Filth"y\, a. [Compar. Filthier; superl. Filthiest.]
Defiled with filth, whether material or moral; nasty; dirty;
polluted; foul; impure; obscene. "In the filthy-mantled
pool." --Shak.
[1913 Webster]
He which is filthy let him be filthy still. --Rev.
xxii. 11.
Syn: Nasty; foul; dirty; squalid; unclean; sluttish; gross;
vulgar; licentious. See Nasty.
[1913 Webster]
WordNet (r) 3.0 (2006):
filthy
adj 1: disgustingly dirty; filled or smeared with offensive
matter; "as filthy as a pigsty"; "a foul pond"; "a nasty
pigsty of a room" [syn: filthy, foul, nasty]
2: vile; despicable; "a dirty (or lousy) trick"; "a filthy
traitor" [syn: dirty, filthy, lousy]
3: characterized by obscenity; "had a filthy mouth"; "foul
language"; "smutty jokes" [syn: cruddy, filthy, foul,
nasty, smutty]