Make a knot not? (5)
I believe the answer is:
untie
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">make a knot not?</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 untie that I've seen before include "Release from bonds or open shoelace" , "Disconnect; release" , "get rid of bonds" , "Undo, unfasten" , "Set free" .)