potty mouth

• pottymouth

• IPA^(key): /ˈpɒti maʊθ/

potty mouth (plural potty mouths)

1. (idiomatic, euphemistic) The characteristic of regularly using vulgar language, especially strong profanities.
   • 2007 Nov. 16, Janet Stewart, "Feral cats need someone to lend a hand," Winnipeg Free Press:

     Enough of my bathroom humour, my potty mouth.

2. (idiomatic) A person having this characteristic.
   • 2007 Dec. 5, Mike Redding, "Just being honest, I swear," WCNC.com:

     I’ve turned myself into a potty mouth. I swear. Too much.

• Sometimes this noun is used attributively, as, for example, in: The language of my potty-mouth coworkers can be very offensive.

• guttermouth

• potty-mouthed

• wash your mouth out
• watch one's mouth

• Oxford English Dictionary, 2nd ed., 1989.