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motormouth

British  
/ ˈməʊtəˌmaʊθ /

noun

  1. slang a garrulous person

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A motormouth book agent mustn't speak, otherwise a magical tree will die, and so will he.

From BBC

A few years later, when Lawrence saw Vaughn as the motormouth Trent in “Swingers,” he felt a joyous thrill of recognition.

From Los Angeles Times

Paul Giamatti would just like to put it out there that maybe he doesn’t always have to play such a motormouth.

From New York Times

Dad is grumbling in the back seat, which he shares with his motormouth 6-year-old son.

From New York Times

It would be hard to imagine a more dramatic departure for Brosnahan from her Emmy-winning turn in “The Marvelous Mrs. Maisel,” in which she gave us the 1950s New York housewife as blithely overconfident motormouth.

From Los Angeles Times