Express indifference (5)
I believe the answer is:
shrug
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">express indifference</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for shrug that I've seen before include "Show lack of concern" , "Express silent doubt" , "Gesture expressing unconcern" , "____ off, dismiss" , "display nonchalance" .)