run off at the mouth

Idioms and Phrases

Talk incessantly, babble, as in Wilbur is always running off at the mouth about his investments . This idiom transfers a flow of water to an unending flow of words. [ Slang ; c. 1900]

Example Sentences

If Carlson insisted on it, it may be because he wants to control it instead of letting Trump run off at the mouth as he does in live interviews.

From Salon

She run off at the mouth so much no man would have her.

From Literature

In 19 N.B.A. seasons as the strong, silent and never-salacious type, Duncan did not write a book, run off at the mouth, or elaborate on much.

From New York Times

She run off at the mouth so much no man would have her.

From Literature

Even with methodical training they were inclined to run off at the mouth, make unnecessary displays of themselves, unconsciously slip in the tiniest flourish that could scare off a nervous contact.

From Literature

Related Words

• blubber
• burble
• mumble
• murmur
• mutter