big mouth - Definition & Meaning

someone who shares someone's secrets and private matters with otherssomeone who shares someone's secrets and private matters with others

The origin of the phrase "big mouth" is not definitively known, but it likely stems from the idea that a person with a physically larger mouth would be more prone to speaking loudly or indiscreetly. The term has been in use since the early 20th century and has become a common expression in English to describe someone who talks too much or shares information without discretion.The origin of the phrase "big mouth" is not definitively known, but it likely stems from the idea that a person with a physically larger mouth would be more prone to speaking loudly or indiscreetly. The term has been in use since the early 20th century and has become a common expression in English to describe someone who talks too much or shares information without discretion.

例句

Don't tell Sarah any secrets; she has a big mouth and can't keep anything confidential.
不要告诉莎拉任何秘密；她大嘴巴，什么秘密都保不住。
I can't trust Mike with personal matters because he has a tendency to blab everything.He's such a big mouth.
我不能信任迈克处理个人事务，因为他有把一切都说出去的倾向。他真是个大嘴巴。
John's big mouth got him into trouble again when he revealed sensitive company information to a competitor.
约翰的大嘴巴再次给他带来了麻烦，因为他向竞争对手透露了公司的敏感信息。