Nervous
WordNet
adjective
(1) Unpredictably excitable (especially of horses)
(2) Excited in anticipation
(3) Easily agitated
"Quick nervous movements"
(4) Causing or fraught with or showing anxiety
"Spent an anxious night waiting for the test results"
"Cast anxious glances behind her"
"Those nervous moments before takeoff"
"An unquiet mind"
(5) Of or relating to the nervous system
"Nervous disease"
"Neural disorder"
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