Ignore inspector’s gaze (9)
I believe the answer is:
disregard
'ignore' is the definition.
('disregard' can be a synonym of 'ignore')
'inspector's gaze' is the wordplay.
'inspector's' becomes 'dis' (I've seen this in other clues).
'gaze' becomes 'regard' ('regard' can be a synonym of 'gaze').
'dis'+'regard'='DISREGARD'
(Other definitions for disregard that I've seen before include "Overlook - inattention" , "Push aside" , "Neglect, ignore" .)