Scoffing (8)
I believe the answer is:
sneering
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">scoffing</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for sneering that I've seen before include "Smiling contemptuously" , "Showing scorn or contempt" .)