Pronunciation: /bɪɡ maʊθ/
noun a person who talks too much or indiscreetly
A1 My little brother has a big mouth and always tells on me.
A2 She's such a big mouth, she can't keep a secret for more than a day.
B1 I don't trust him with sensitive information, he's known for being a big mouth.
B2 The politician's big mouth got him into trouble when he made controversial remarks.
C1 Her big mouth often lands her in trouble, as she tends to speak without thinking.
C2 Despite his big mouth, he is a skilled negotiator and knows how to use words to his advantage.
adjective describing someone who talks a lot or speaks loudly or indiscreetly
A1 She has a big mouth and always talks loudly.
A2 He's known for being a big mouth in the office, always gossiping.
B1 Don't be such a big mouth and keep our plans a secret.
B2 Her big mouth got her in trouble when she revealed confidential information.
C1 His reputation as a big mouth preceded him wherever he went.
C2 The politician's big mouth often landed him in hot water with his controversial statements.
formal She is often criticized for having a big mouth and speaking without thinking.
informal My friend is such a big mouth, she can never keep a secret.
slang Don't listen to him, he's just a big mouth trying to impress everyone.
figurative His big mouth got him into trouble once again, he just can't help himself.
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having a big mouth