Awakening (7)
I believe the answer is:
arousal
'awakening' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for arousal that I've seen before include "Act of waking (someone)" , "Drinking spree" , "Sexual excitement" , "Awakening (of emotion, etc)" , "Awakening; stimulation" .)