Dodgy casinos led to being miserable (12)
I believe the answer is:
disconsolate
'miserable' is the definition.
(thesaurus)
'dodgy casinos led to' is the wordplay.
'dodgy' indicates an anagram (a dodgy or wrong order of the letters).
'casinos'+'led'+'to'='casinosledto'
'casinosledto' anagrammed gives 'DISCONSOLATE'.
'being' is the link.
(Other definitions for disconsolate that I've seen before include "Unhappy and impossible to comfort" , "Sad; beyond comfort" , "Low in spirits" , "Deeply sad" , "Stuck with the blues" .)