'Foul-mouthed' definitions:

Definition of 'foul-mouthed'

From: WordNet
adjective
Using foul or obscene language; "noisy foul-mouthed women all shouting at once" [syn: foul-mouthed, foul- spoken]

Definition of 'Foul-mouthed'

From: GCIDE
  • 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]