can't survive (without ...); can't live (without ...)
Expresses inability to go on living or to survive without something essential. Often used with a conditional or without-phrase.
We can't survive without water.
I can't live without you.
Alternate spelling using 行く for the subsidiary verb; less common in modern usage.
Negative potential form of 生きていく (to go on living), from 生きる (to live) + ていく (to go on doing).