Perceive that Cinders is going out (7)
I believe the answer is:
discern
'perceive' is the definition.
(I've seen this in another clue)
'cinders is going out' is the wordplay.
'is going out' indicates anagramming the letters (out can mean wrong or inaccurate).
'cinders' with letters rearranged gives 'DISCERN'.
'that' acts as a link.
(Other definitions for discern that I've seen before include "Cinders (anag)" , "Recognise, find out" , "Notice" , "Perceive - distinguish" , "spot" .)