Eager, excited (4)
I believe the answer is:
agog
This clue is a double definition.
'eager' is the first definition.
(I've seen this before)
'excited' is the second definition.
(similar in meaning)
(Other definitions for agog that I've seen before include "Wide-eyed and fascinated" , "Eager or curious" , "Perfect" , "Impatient" , "Eager, avid" .)