Quavering (9)
I believe the answer is:
tremulous
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">quavering</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that quavering can be written as tremulous)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for tremulous that I've seen before include "Shaky" , "Slightly shaking" , "Timid; shaking" , "Shaking, quivering" , "Timid; quivering" .)