Tremor of excitement (6)
I believe the answer is:
thrill
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">tremor of excitement</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for thrill that I've seen before include "Excited feeling" , "Titillate" , "Excite, animate" , "D. W. _, pioneer US film director; rigs fifth (anag.)" , "Buzz" .)