Having the characteristic of regularly using vulgar language, especially strong profanities.(adjective)
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Use "potty-mouthed" in a sentence
"But perhaps it's worth noting that even the allegedly potty-mouthed Winslet somehow got through her Academy Awards acceptance speech without uttering the queen mother of all bad words."
"Granted, no one pays to watch a potty-mouthed drunk from Row C shout: "You're shite!" at the stage."
"He was not your typical potty-mouthed lying GOP pol."