nervous

Adjective

• unpredictably excitable (especially of horses)

• excited in anticipation

• of or relating to the nervous system
  • nervous disease
    
  • neural disorder
    

• 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
    

• easily agitated
  • a nervous addict
    
  • a nervous thoroughbred
    

Related words

• Synonyms: 
  skittish , flighty , spooky , aflutter , neural , anxious , queasy , uneasy , unquiet