Triumphantly happy (8)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">triumphantly happy</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 jubilant that I've seen before include "Overjoyed" , "Elated" , "Triumphantly joyful" , "Showing extreme joy" , "Ecstatic" .)
(Other definitions for exultant that I've seen before include "Jubilant, rejoicing greatly" , "Triumphantly elated" , "Triumphant" , "Rejoicing greatly, delighted" , "really happy" .)