Akademik

nervous
1. Relating to a nerve or the nerves. 2. Easily excited or agitated; suffering from mental or emotional instability; tense or anxious. 3. Formerly, denoting a temperament characterized by excessive mental and physical alertness, rapid pulse, excitability, often volubility, but not always fixity of purpose. [L. nervosus]

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ner·vous 'nər-vəs adj
1) of, relating to, or composed of neurons <the \nervous layer of the eye>
2 a) of or relating to the nerves also originating in or affected by the nerves <\nervous energy>
b) easily excited or irritated
ner·vous·ly adv
ner·vous·ness n

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ner·vous (nurґvəs) [L. nervosus, from nervus] 1. neural (def. 1). 2. unduly excitable or easily agitated.

Medical dictionary. 2011.