01 a. Using language scurrilous, opprobrious, obscene, or profane; abusive; as, noisy foul-mouthed women all shouting at once.
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Using language scurrilous, opprobrious, obscene, or profane; abusive; as, noisy foul-mouthed women all shouting at once.“So foul-mouthed a witness never appeared in any cause.” — Addison.