Dead tired phrase informal
Completely fatigued.
I feel dead tired after walking ten kilometres.
After a long trip, she was dead tired.
I'm dead tired, but I can't sleep.
Said when you are too tired to do something
Used when one suffers from mental or emotional exhaustion
Very tired as you've used too much cannabis.
Be very bored
Completely dark, without any light or color
I'm scared of the basement! It's as black as a skillet!