Full of happiness (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">full of happiness</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 joyous that I've seen before include "Cock-a-hoop" , "Happy; festive" , "Full of happiness" , "Exultant" , "Enraptured" .)
(Other definitions for joyful that I've seen before include "Feeling great happiness" , "Happy" , "Elated" , "Feeling rapture or delight" , "Full of glee" .)