Defilement (9)
I believe the answer is:
pollution
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">defilement</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for pollution that I've seen before include "Harmful contamination" , "Toxic waste" .)