Source : Webster's Revised Unabridged Dictionary (1913)

Foul-spoken \Foul"-spo`ken\, a.
   Using profane, scurrilous, slanderous, or obscene language.
   --Shak.

Source : WordNet®

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