One who interferes (7)
I believe the answer is:
meddler
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">one who interferes</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 meddler that I've seen before include "Interfering person" , "Busybody (not fruit!)" , "One who interferes" , "One interfering" , "Interferer" .)