Exposed a crazy dude to a bad end (7)
I believe the answer is:
denuded
'exposed' is the definition.
(thesaurus)
'a crazy dude to a bad end' is the wordplay.
'a crazy' is an anagram indicator.
'to' means one lot of letters go next to another (I've seen this in other clues).
'a bad' indicates anagramming the letters.
'dude' with letters rearranged gives 'uded'.
'end' anagrammed gives 'den'.
'uded' put after 'den' is 'DENUDED'.
(Other definitions for denuded that I've seen before include "Stripped" , "Laid bare" .)