have a loud mouth(redirected from got a loudmouth)
have a loud mouth
To have a tendency or habit of speaking incessantly, indiscreetly, and/or in a noisy, boastful manner. I can't stand Terry's new husband—he has such a loud mouth when he drinks! If I'd known you had such a loud mouth, I'd have never shared my secret with you!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.