have a big mouth
see big mouth.
The Dictionary Just Got A Little Bigger2013 was an exciting year for the English vocabulary. Some long-simmering terms like twerk bounced into the spotlight, while new coinages (from the trendy cronut and selfie to the serious Obamacare) cemented their place in the English language. As the English language grows and evolves, so must our dictionary. Here are just a few words recently added to Dictionary.com: Google Glass DWT bitcoin binge-watch confusticate …
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.