1. big mouth - Noun
2. big mouth - Phrase
(idiomatic) The mouth of someone who talks too much, especially by making exaggerated claims or by inappropriately revealing information.
Shut your big mouth or I'll shut it for you.
(idiomatic) A person who talks too much, especially by making exaggerated claims or by inappropriately revealing information.
Shut up, big mouth!
If you've got a big mouth and you're controversial, you're going to get attention. Simon Cowell
I'm a sensationalist. I'm a big mouth. I get attention. In this world you have to - if you want a mass-market presentation, you have to get attention. Bill O'Reilly
The mob shouts with one big mouth and eats with a thousand little ones. Stanisław Jerzy Lec
How old do you have to get before wisdom descends like a plastic bag over your head and you learn to keep your big mouth shut? Maybe never. Maybe you get more frivolous with age. Margaret Atwood
I shoot my big mouth off; it just pops up! I have to learn to edit myself. Marianne Faithfull
I was a bit of a big mouth my whole life. I'm a person who expresses themselves with a lot of openness. Anne Heche