Quality (8)
I believe the answer is:
property
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">quality</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for property that I've seen before include "Owned item(s)" , "Stuff that is owned" , "Something owned" , "Quality; building" , "(A) characteristic; land, stocks etc." .)