Fainthearted (5)
I believe the answer is:
timid
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">faint-hearted</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for timid that I've seen before include "Mouse" , "Gutless" , "afraid to speak out?" , "Not brave" , "Not assertive, retiring" .)