Fake Angie Finkelstein's partial comeback (5)
I believe the answer is:
feign
'fake' is the definition.
(I know that fake is a more specific form of feign)
'angie finkelstein's partial comeback' is the wordplay.
'partial' indicates a hidden word.
'comeback' is a reversal indicator.
'ngief' can be found hidden inside 'angie finkelstein'.
'ngief' written backwards gives 'FEIGN'.
(Other definitions for feign that I've seen before include "Pretend, simulate" , "Make a pretence of" , "Counterfeit, simulate" , "Dissemble" , "outdated shape" .)