Stimulation, awakening (7)
I believe the answer is:
arousal
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">stimulation</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >'<span class="explanation-format__original">awakening</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for arousal that I've seen before include "heating?" , "Awakening (of emotion, etc)" , "Act of awakening" , "Act of waking (someone)" , "Awakening; stimulation" .)