Quality arousing pity (6)
I believe the answer is:
pathos
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">quality arousing pity</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 pathos that I've seen before include "The quality moves one to pity" , "feeling of pity" , "Quality eliciting pity and sympathy" , "A quality that arouses pity or sorrow" , "Hot spa (anag) - sadness" .)