The idiom "run off at the mouth" means to talk too much or say things that are unnecessary or inappropriate. It is used to describe someone who talks excessively, often without thinking about what they are saying.
For example, if someone is constantly talking and not allowing others to speak, you could say, "He's always running off at the mouth." Or if someone is saying things that are offensive or rude, you could say, "She needs to stop running off at the mouth before she gets herself in trouble."
This idiom is often used in informal situations, such as in casual conversations with friends or family. It can also be used in more formal settings, such as in a workplace or during a meeting, to describe someone who is talking too much and not allowing others to contribute.
In summary, "run off at the mouth" is an idiom that means to talk excessively or say things that are unnecessary or inappropriate. It is used to describe someone who talks too much and does not think before speaking.
• She always runs off at the mouth when she's excited about something. (basic level)
• He was running off at the mouth about his new car, but I think he was exaggerating. (pre-intermediate level)
• The CEO's speech was impressive, but she ran off at the mouth when discussing the company's financial status, leaving many investors concerned. (proficient level)
• The comedian's routine was hilarious, but at times he ran off at the mouth and made some inappropriate jokes. (advanced level)
• The politician ran off at the mouth during the debate, but didn't offer any concrete solutions. (upper-intermediate level)
• I wish my boss would stop running off at the mouth during meetings and get to the point. (intermediate level)