Cock-a-hoop (6)
I believe the answer is:
elated
'cock-a-hoop' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for elated that I've seen before include "Overjoyed, extremely pleased" , "Happy and exicited, overjoyed" , "Feeling overjoyed and happy" , "Thrilled" , "Full of high-spirited delight" .)