1) Agitation 2) Angst 3) Anxiety 4) Apprehension 5) Apprehensiveness 6) Awkwardness 7) Concern 8) Diffidence 9) Discomfort 10) Disquiet 11) Fear 12) Fretfulness 13) Jitteriness 14) Jumpiness 15) Restiveness 16) Restlessness 17) Shyness 18) Tentativeness 19) Unease 20) Uneasiness 21) Worry 1) Bashfulness 2) Butterflies 3) Jitteriness 4) Jitters 5) Jumpiness 6) Nerves 7) Nervosity 8) Restiveness 9) Restlessness 10) Skittishness 11) Unease 12) Worry 
• (n.) State or quality of being nervous. • (n.) State or quality of being nervous.
excessive excitability and irritability, with mental and physical unrest.
Excessive excitability and irritability, with mental and physical unrest. ... (18 Nov 1997) ... 
(nur´vәs-nis) a state of excitability, with great mental and physical unrest.
Nerv'ous·ness noun State or quality of being nervous. 
Type: Term Pronunciation: ner′vŭs-nes Definitions: 1. A condition of being nervous (2).
[n] - an uneasy state 2. [n] - a sensitive or highly strung temperament
noun a sensitive or highly strung temperament