Writhe, squirm (7)
I believe the answer is:
wriggle
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">writhe</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that writhe can be written as wriggle)</span><br/ ><br/ >'<span class="explanation-format__original">squirm</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ ></span>
(Other definitions for wriggle that I've seen before include "Move like worm" , "Twist to and fro" , "Squirm" , "Move writhingly" , "Move with short twisting jerks" .)