a motor mouth

(redirected from a motormouth)
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a motor mouth

A person who talks incessantly or irrepressibly. Jake is such a motor mouth that I find it exhausting talking to him! You need to quit being such a motor mouth in the classroom!
See also: motor, mouth
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

motor-mouth

verb
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
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References in periodicals archive ?
Summary: Islamabad [Pakistan], Sept 2 (ANI): Pakistani Railway Minister Sheikh Rashid Ahmed, infamous for being a motormouth, has claimed that his country possessed "125-250 gram atom bombs" that may hit a targeted area in India.
"He definitely wasn't a motormouth. Korky had the measure of him.
Howes rapped: "Graeme found himself in hot water over here with his reputation as a motormouth. He is now adding his own Australian interpretation as Mystic Meg!