Bloodsuckers; hangers-on (9)
I believe the answer is:
parasites
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">bloodsuckers</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >'<span class="explanation-format__original">hangers-on</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ ></span>
(Other definitions for parasites that I've seen before include "Passengers" , "Hangers-on" , "unwelcome guests" , "They live off other organisms" , "they need indulgent hosts" .)