lost to the world🔊

(of a thing, event, etc) No longer used or available; unknown to or forgotten by everyone.

(of a person) No longer existent, deceased.

(of a person) Physically located in a remote place where one is unnoticed or incommunicado.

(of a person) Mentally focussed on one's own thoughts or feelings, or on some task, to such a degree that one is unaware of other people or of one's surroundings; unconscious.