Overly involved (5)
I believe the answer is:
messy
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">overly involved</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for messy that I've seen before include "Untidy, dirty" , "Dirty and disorderly" , "Disorganised" .)