Untethered (5)
I believe the answer is:
loose
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">untethered</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for loose that I've seen before include "Relaxed; set free" , "Showing fast behaviour" , "Unfixed" , "Promiscuous" , "Hanging" .)