Sudden start (3)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">sudden start</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 shy that I've seen before include "Suddenly start" , "Embarrassed in company" , "Throw in self-conscious way" , "Tongue-tied" , "Nervous or timid in company" .)