Verdict is in code to be unravelled (8)
I believe the answer is:
decision
'verdict' is the definition.
(thesaurus)
'is in code to be unravelled' is the wordplay.
'to be unravelled' indicates anagramming the letters.
'is'+'in'+'code'='isincode'
'isincode' anagrammed gives 'DECISION'.
(Other definitions for decision that I've seen before include "Verdict, outcome" , "A reasoned judgement about something, no dithering" , "Conclusion, resolution" , "A judgment or choice" , "Judgement; settlement" .)