Give you a feeling of excitement when you attack (4,2)
I believe the answer is:
turn on
'attack' is the definition.
(thesaurus)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for turn on that I've seen before include "Excite -- activate" , "Cause of excitement" , "Person with twenty five [SEX APPEAL]" , "Start working" , "Set in operation" .)