Cách sử dụng
The expression "give somebody up for lost" means to accept that someone is gone or cannot be found, and to stop looking or hoping for them to return. This is often used when there has been a long search for a missing person, and all hope of finding them has been lost. It is also used in situations where someone has been in grave danger, but has not been heard from or seen in a long time, causing others to fear the worst.