drained of energy or effectiveness
extremely tired
completely exhausted
e.g. the day's shopping left her exhausted
e.g. he went to bed dog-tired
e.g. was fagged and sweaty
e.g. the trembling of his played out limbs
e.g. felt completely washed-out
e.g. only worn-out horses and cattle
e.g. you look worn out
Synonym: exhausted dog-tired fagged played out spent washed-out worn-out(a) worn out(p)