filthiest

from 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]
    

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