Gloomy, sullen (6)
I believe the answer is:
morose
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">gloomy</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(morose means gloomy or sad)</span><br/ ><br/ >'<span class="explanation-format__original">sullen</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(both mean miserable)</span><br/ ><br/ ></span>
(Other definitions for morose that I've seen before include "blue" , "Peevish and gloomy" , "in a grumpy mood" , "Sullen and brooding" , "Sullen and gloomy" .)