big mouth phrase
used as a criticism of someone when they say things that they should not
You should have kept your big mouth shut.
I didn’t realize it was a secret. Me and my big mouth!
Thesaurus: people who are annoying or unpleasantsynonym
Main entry: mouth
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noun, pl ⋯ mouths [count]
informal : a person who cannot keep a secret or who talks too much
She's a big mouth.
— used in phrases that describe a person who talks too much
Why did you have to open your big mouth and tell everyone our business?
Be careful of what you say around her–she has a big mouth. [=she is likely to tell other people what you said]
big-mouthed adj
The surprise was spoiled by my big-mouthed friend.
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a person who talks a lot, especially about him- or herself, and who cannot keep secrets
Derived Word: ↑big-mouthed
Useful english dictionary. 2012.