The Vietnamese word "bạo bệnh" is a noun that refers to a "sudden grave illness." It describes a serious health condition that appears unexpectedly and can have severe consequences.
In more advanced contexts, "bạo bệnh" can be used metaphorically to describe a sudden crisis or a severe problem in other areas, such as business or relationships. For example: - "Công ty đã gặp bạo bệnh khi doanh thu giảm mạnh." (The company faced a sudden grave issue when revenue dropped sharply.)