LOST

[adjective]To be/get lost is to not know where you are and how to get to a place.I got lost in the London Underground.Things tend to get lost (= you do not know where they are) mysteriously when you move house.I'd be lost (= would not know what to do) without you.To be lost is also to give so much attention to what you are doing that you are not aware of anything else that is happening around you.When Bernard listens to music he becomes completely lost to the world.She was completely lost in her book.Reading her work I was lost in admiration for what she had achieved.If something that you say is lost on another person, it has no effect or they do not understand it.Financial discussions are lost on me, I'm afraid.You say get lost to someone when you want to tell them forcefully and quite rudely to go away.You should have told him to get lost.Oh go away, get lost!A lost cause is something that has no chance of succeeding.She's always supporting some lost cause or other.Lost property means things that people have accidentally left in public places.Have you asked at the (UK and ANZ) lost property office/(US) lost-and-found office (= a place in a public building where lost things are stored)?