Rubbish dropper (9)
I believe the answer is:
litterbug
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rubbish dropper</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 litterbug that I've seen before include "One likely to drop" , "Trash dropper" , "Person wilfully dropping rubbish" , "One leaving papers around" , "Inconsiderately, one drops" .)