burnt-out
adjective /ˌbɜːnt ˈaʊt/
  /ˌbɜːrnt ˈaʊt/
(also burned-out 
 /ˌbɜːnd ˈaʊt/
  /ˌbɜːrnd ˈaʊt/
)- destroyed or badly damaged by fire
- a burnt-out car
 
 - feeling as if you have done something for too long and need to have a rest
- I'm feeling burnt-out at work—I need a holiday.