Cách sử dụng
If someone "has a big mouth," it means they talk too much or say things they shouldn't. This phrase is often used to describe someone who can't keep a secret or who gossips too much. For example, if you tell someone a secret and they tell everyone else, you could say "I shouldn't have trusted them, they have a big mouth." It's important to be careful about who you share sensitive information with and not to be too talkative if you want to avoid being accused of having a big mouth.