Rapturous (8)
I believe the answer is:
ecstatic
'rapturous' is the definition.
(synonyms)
This is all the clue.
(Other definitions for ecstatic that I've seen before include "In a state of great delight" , "Thrilled and overjoyed" , "Showing great delight" , "in a trance" , "Cites act about being thrilled to bits" .)