Painter is imprisoned in shock judgment (9)
I believe the answer is:
appraisal
'judgment' is the definition.
(I've seen this before)
'painter is imprisoned in shock' is the wordplay.
'painter' becomes 'ra'.
'imprisoned in' indicates putting letters inside.
'shock' becomes 'appal' ('appal' can be a synonym of 'shock').
'ra'+'is'='rais'
'rais' put inside 'appal' is 'APPRAISAL'.
(Other definitions for appraisal that I've seen before include "judgement" , "Evaluation - papal airs (anag)" , "judgment" , "valuation" , "Evaluation - price survey" .)