Happiness, glee (7)
I believe the answer is:
delight
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">happiness</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">glee</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for delight that I've seen before include "Gladden" , "Pleasure (possibly Turkish?)" , "Glee; its spirit rare, Shelley" , "Captivate" , "Rejoice" .)