foul-mouthed

from WordNet (r) 3.0 (2006)

foul-mouthed
    adj 1: using foul or obscene language; "noisy foul-mouthed women
           all shouting at once" [syn: {foul-mouthed}, {foul-
           spoken}]

from The Collaborative International Dictionary of English v.0.48

Foul-mouthed \Foul"-mouthed`\, a.
   Using language scurrilous, opprobrious, obscene, or profane;
   abusive; as, noisy foul-mouthed women all shouting at once.

   Syn: foul-spoken.
        [1913 Webster + WordNet 1.5]

              So foul-mouthed a witness never appeared in any
              cause.                              --Addison.
        [1913 Webster]