To be knackered

To be dog tired!







To be knackered
(exhausted, no more energy or strength, mentally can't think anymore)

• I'm knackered from my first night-shift

Synonyms:
To be out on one's feet
To be drained
To be dead tired
To be worn out (like an old shoe.)
To be burnt out
To be wiped out

Or also:
I'm spent, I'm done, I'm all in, I'm dead on my feet