Leave out in the shade, exposed (8)
I believe the answer is:
revealed
'exposed' is the definition.
('reveal' can be a synonym of 'expose')
'leave out in the shade' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'in the' means one lot of letters goes inside another.
'shade' becomes 'red'.
'leave' anagrammed gives 'veale'.
'veale' placed inside 'red' is 'REVEALED'.
(Other definitions for revealed that I've seen before include "Exposed" , "Made clear and visible" , "Shown" , "Like the religion" , "Discovered" .)