Inspector, say, torn apart by son’s aversion (8)
I believe the answer is:
distaste
'aversion' is the definition.
('distaste' can be a synonym of 'aversion')
'inspector say torn apart by son's' is the wordplay.
'inspector' becomes 'di' (I've seen this in other clues).
'say' becomes 'state' ('state' can be a synonym of 'say'**).
'torn apart by' indicates putting letters inside (some letters tear an opening in others).
'state' placed around 's' is 'staste'.
'di'+'staste'='DISTASTE'
(Other definitions for distaste that I've seen before include "Mild dislike, aversion" , "lack of relish?" , "Feeling of dislike or aversion" , "Antipathy, aversion" , "Dislike of something unsavoury" .)