The most common and most likely answer to this crossword clue is the 9 letter word EXHAUSTED
I've seen this crossword clue in The Daily Telegraph
E
X
H
A
U
S
T
E
D
More clues leading to the result EXHAUSTED
- Burnt-out UKIP leader hated sex romps
- Tired of former partner and husband, a cast-off that gets time inside
- Worn out as he taxed us horribly
- Former partner, a stud — he could be worn out!
- Ready to drop tax due? He’s crafty
- Once in Berlin House, Edward was knocked out
- Wasted old husband starting to argue for nothing — thrown out
- Former girlfriend hung around, switching partners, becoming tired
- Old girlfriend loathed going around America, tired
Buddy explains!

The straight part
We know that "Tired" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case tired = exhausted.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does EXHAUSTED mean?
EXHAUSTED verb- To draw or let out wholly; to drain off completely
- To empty by drawing or letting out the contents
- To drain; to use up or expend wholly, or until the supply comes to an end
- To tire out; to wear out; to cause to be without any energy
- To bring out or develop completely
- To discuss thoroughly or completely
- To subject to the action of various solvents in order to remove all soluble substances or extractives
- Very tired; in a state of exhaustion.
- Depleted of resources.