Geese occasionally neglected? Gosh! (3)
I believe the answer is:
gee
'gosh' is the definition.
(I've seen this in other clues)
'geese occasionally neglected?' is the wordplay.
'occasionally neglected?' indicates alternate letters (letters removed at regular intervals).
The alternate letters of 'geese' are 'GEE'.
(Other definitions for gee that I've seen before include "Well I never" , "- - whiz! (US)" , "Gosh" , "Word of encouragement to a horse" , "Golly" .)