Here are some synonyms for exhausted:
* Tired
* Weary
* Fatigued
* Worn out
* Spent
* Drained
* Depleted
* Burned out
Here are some examples of how "exhausted" can be used:
* "After a long day of work, I was completely exhausted."
* "The runner was exhausted after finishing the marathon."
* "She was exhausted from taking care of her sick child all night."