Pretend to be discerning? (4,3)
I believe the answer is:
make out
I believe this clue is a double definition.
'pretend' is the first definition.
(I've seen this before)
'to be discerning?' is the second definition.
(Other definitions for make out that I've seen before include "understand" , "Descry - succeed" , "Manage to see" , "Distinguish; pretend" , "Discern" .)