Declare nothing will stop crime, creating disgust (8)
I believe the answer is:
aversion
'disgust' is the definition.
(aversion can mean a feeling of disgust)
'declare nothing will stop crime' is the wordplay.
'declare' becomes 'aver' (averring is a kind of declaring).
'nothing' becomes 'O' (O resembles 0).
'will stop' means one lot of letters goes inside another.
'crime' becomes 'sin'.
'o' going within 'sin' is 'sion'.
'aver'+'sion'='AVERSION'
'creating' is the link.
(Other definitions for aversion that I've seen before include "Strong dislike for, makes you look away" , "Extreme dislike" , "distaste" , "Strong disinclination" , "an object of dislike" .)