Exciting, thrilling (8)
I believe the answer is:
electric
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">exciting</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >'<span class="explanation-format__original">thrilling</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ ></span>
(Other definitions for electric that I've seen before include "describing power supplies?" , "Thrillingly exciting" , "This storm has lots of thunder and lightning" , "Charged with sudden thrill" , "Thrilling (fig.)" .)