Untied (5)
I believe the answer is:
loose
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">untied</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for loose that I've seen before include "Not bound" , "Relaxed; set free" , "Not strict" , "Unrestrained" , "untidy" .)