Delighted; under a spell (9)
I believe the answer is:
enchanted
This clue is a double definition.
'delighted' is the first definition.
(similar in meaning)
'under a spell' is the second definition.
(I've seen this before)
(Other definitions for enchanted that I've seen before include "Bewitched" , "Put under spell" , "delighted by spelling" , "Captivated" , "Delighted, charmed" .)