hero-hero
Utterly exhausted and wobbly with no strength left; also describes flimsy, limp objects.
💡After days of overtime — 'I'm completely hero-hero.'
残業続きでへろへろになっている。
I'm completely worn out hero-hero from working overtime every day.
After the marathon, my legs were ___ like jelly.
残業続きで○○になっている。