Injured sneakily (5)
I believe the answer is:
kneed
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">injured sneakily</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 kneed that I've seen before include "Jointly attacked" , "Hit with part of leg" .)