Scorn, inside or out (8)
I believe the answer is:
derision
'scorn' is the definition.
(I've seen this in another clue)
'inside or out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'inside'+'or'='insideor'
'insideor' is an anagram of 'DERISION'.
(Other definitions for derision that I've seen before include "Mockery, ridicule" , "'Ridicule, contempt (8)'" , "Ironside (anag) - mockery" , "Contemptuous mockery" , "Contemptuous ridicule" .)