Great elation (8)
I believe the answer is:
euphoria
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">great elation</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 euphoria that I've seen before include "Intense joy" , "Ecstasy" , "Exaggerated feeling of wellbeing" , "State of great elation" , "Feeling of extreme elation" .)