Cower (6)
I believe the answer is:
cringe
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">cower</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for cringe that I've seen before include "Crouch" , "Start" , "Cower in fear or disgust" , "quail" , "Shrink away in fear" .)