Cách sử dụng
The phrase "stab somebody in the back" means to betray someone in a sneaky or dishonest way, especially when they are not expecting it. This can happen when somebody acts friendly to your face, but then goes behind your back and does something harmful or hurtful to you. It's a common expression that describes a very negative action, and it's important to understand what it means in case you hear someone using it.