Wild excitement (6)
I believe the answer is:
frenzy
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">wild excitement</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for frenzy that I've seen before include "State of violent mental agitation" , "Wild excitement" , "Hysteria" , "Violent excitement or agitation" , "Period of wild behaviour" .)