Dislike a model (8)
I believe the answer is:
aversion
'dislike' is the definition.
(aversion is a kind of dislike)
'a model' is the wordplay.
'model' becomes 'version' (I've seen this before).
'a'+'version'='AVERSION'
(Other definitions for aversion that I've seen before include "Dislike, hatred" , "Hate" , "distaste" , "an object of dislike" , "Abhorrence - loathing" .)