expression
as good as dead; might as well be dead
Fixed expression used to describe someone or something that is in such a bad state that it is practically dead or worthless. Often used hyperbolically.
こんなに疲れてちゃ、死んだも同然だよ。
I'm so exhausted I might as well be dead.
この車はエンジンが壊れて、もう死んだも同然だ。
This car's engine is broken; it's as good as dead.