nervy

形容词 nervy:

1. being in a tense state
   同义词：edgy, high-strung, highly strung, in suspense, jittery, jumpy, overstrung, restive, uptight
2. showing or requiring courage and contempt of danger
3. offensively bold
   同义词：brash, cheeky

1. But why is it doctor that I am always so nervy, tense and ready to jump on anybody ...
   可是大夫，为什么我总是感到神经质、紧张、爱发脾气 ...

nerv.y

adj.（形容词）
nerv.i.er,nerv.i.est
Arrogantly impudent; brazen.
紧张不安的：傲慢无礼的；厚颜的
Showing or requiring courage and fortitude; bold.
显出或需要有勇气的和坚韧的；大胆的
Chiefly British Jumpy; nervous.
【多用于英国】 激动的；神经质的
Archaic Full of muscular force; sinewy.
【古语】 肌肉发达的；健壮的

【引伸】
nerv.iness
n.（名词）