Eye impertinently (4)
I believe the answer is:
ogle
'eye impertinently' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ogle that I've seen before include "Eye lustfully" , "Look with desire" , "Cast amorous glances" , "flirtatious look" , "Amorous glance" .)