Unconscious or sound asleep.
Decisively beaten; defeated; rendered irrelevant for the long term.
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.
No longer used or available; unknown to or forgotten by everyone.
No longer existent, deceased.
Physically located in a remote place where one is unnoticed or incommunicado.