Frenetic (7)
I believe the answer is:
frantic
'frenetic' is the definition.
(I know that frenetic can be written as frantic)
This is the entire clue.
(Other definitions for frantic that I've seen before include "very worried" , "Deranged by fear, worry etc" , "Overwrought" , "At the end of one's tether" , "having kittens" .)