Bored feeling (5)
I believe the answer is:
ennui
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">bored feeling</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ennui that I've seen before include "boring" , "Boredom, listlessness" , "What's tedious and instils such listlessness" , "Effect of boredom" , "The feeling of being bored" .)