nervous nerv-, 神經；膽量，勇氣
Of or relating to the nerves or nervous system: nervous tissue. Stemming from or affecting the nerves or nervous system: a nervous disorder.
Easily agitated or distressed; high-strung or jumpy.
Marked by or having a feeling of unease or apprehension: nervous moments before takeoff.
adj. 神經的；緊張不安的；神經興奮的

例句：
The brain is a part of the nervous system of the human body.
腦是人體神經系統的一部分。
She felt very nervous with so many people looking at her.
這么多人瞧著她, 她感到非常緊張。

nerve
a group of long thin fibres that carry information or instructions between the brain and other parts of the body:
bravery or confidence necessary to do something difficult, unpleasant or rude:
the rudeness to do something that you know will upset other people
A sore point or sensitive subject
A vein or rib in the wing of an insect.
The midrib and larger veins in a leaf.
To give strength or courage to.
n. 神經；勇氣；神經過敏;憂慮,焦躁；[植] 葉脈;【昆蟲學】翅脈
vt. 鼓起勇氣

例句：
I am always in a state of nerves on the eve of an examination.
臨考的前夕我總是非常緊張。
She nerved herself to enter the dark room.
她鼓足勇氣走進黑洞洞的房間。

unnerve
To deprive of fortitude, strength, or firmness of purpose.
To make nervous or upset.
vt. 使失去勇氣；使身心交疲；使焦躁；使失常

例句：
The sight of so much blood unnerved her.
一見那么多血，把她嚇壞了。

nerveless
Lacking strength or energy; spiritless; weak.
Lacking courage; spineless or cowardly.
Calm and controlled in trying circumstances; cool.
adj. [臨床] 無力的；松懈的；(緊急情況下)冷靜的，沉著的

nervy
Arrogantly impudent; brazen.
Showing or requiring courage and fortitude; bold.
Chiefly British. Jumpy; nervous.
adj.【口】傲慢的；厚臉皮的；有勇氣的；易激動的；緊張不安的

enervate
To weaken or destroy the strength or vitality of
Medicine. To remove a nerve or part of a nerve.
Deprived of strength; debilitated.
vt. 使衰弱；使失去活力
adj. 衰弱的；無力的

例句：
She was enervated from (或 with) dissipation.
她由于生活放蕩不羈而氣虛體虧。
She was enervated by the luxury of palace life.
宮廷的奢華生活使她變得萎靡不振。

enervation
lack of vitality
serious weakening and loss of energy
n. 衰弱；虛弱；削弱；神經無力

innerve
To give nervous energy to; stimulate
vt.鼓舞；使活躍，使有生氣;使受神經支配 (= innervate)

innervation
the act of innervating; state of being innervated.
n.【解】支配; 神經興奮作用[過程]