Overjoyed still after case of cybercrime is overturned (8)
I believe the answer is:
ecstatic
'overjoyed' is the definition.
(I've seen this before)
'still after case of cybercrime is overturned' is the wordplay.
'still' becomes 'static' (static can mean still or not moving).
'after' means one lot of letters go next to another.
'case of' says to hollow out the word (remove centre letters) (outsides of).
'is overturned' says the letters should be written in reverse.
'cybercrime' with its middle removed is 'ce'.
'ce' backwards is 'ec'.
'static' put after 'ec' is 'ECSTATIC'.
(Other definitions for ecstatic that I've seen before include "Overjoyed, over the moon" , "In a state of great delight" , "Overjoyed, quite delighted" , "Euphoric" , "Feeling immense joy" .)