Like a door that's broken down? Crazy! (8)
I believe the answer is:
unhinged
'crazy' is the definition.
(I know that crazy can be written as unhinged)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for unhinged that I've seen before include "Crazy" , "Wild" , "Mad - hen dug in (anag)" , "doors have been taken off" , "Mentally unbalanced like loose door?" .)