Excitable (7)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">excitable</span>' is the definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for nervous that I've seen before include "On edge, anxious" , "Stirred" , "'Apprehensive, uneasy (7)'" , "Twitchy" , "Jumpy" .)
(Other definitions for hyper that I've seen before include "Abnormally active" , "Slang adjective for over-active or highly-strung" , "Prefix meaning excessively, perhaps active" , "Unable to sit still" , "publicist" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">excitable</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 nervy that I've seen before include "Highly strung" , "Anxious, jumpy" , "Easily agitated, tense" , "Fidgety" , "Excitable" .)