
adj.
- Slang. Speaking loudly or indiscreetly; loudmouthed.
- Having a large mouth.
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American Heritage Dictionary:
big·mouthed |

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![]() | American Heritage Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved. Read more |