To faint is to temporarily lose consciousness, and in some cases, fall over. Fainting is not something that you see every day, but the use of the word is very common for situations that cause a person to experience shock, surprise, or a sudden physical response to pain or trauma.
Nelly began to feel faint after losing so much blood in the accident.
When Tom saw how high the medical bills were for his hospital stay, he suddenly felt faint.
Mildred fainted when she found out her brother died.
I think I’m going to faint.
I’m starting to feel faint.
You look like you’re going to faint.
Jessica fainted at her son’s funeral. It was too much for her to bear.
You’re going to faint when I tell you what just happened. (This kind of a statement is an example of an exaggeration.)