adjective
1.
( of a thing ) badly damaged and/or no longer useful because it has been used a lot :
These shoes are worn out.
the gradual replacement of worn-out equipment
a speech full of worn-out old clichés
2.
[ not usually before noun ] ( of a person ) looking or feeling very tired, especially as a result of hard work or physical exercise :
Can we sit down? I'm worn out.
—compare outworn