Definitions of nervous:

  • adjective:   easily agitated
    Example: "Quick nervous movements"
  • adjective:   of or relating to the nervous system
    Example: "Nervous disease"
  • adjective:   causing or fraught with or showing anxiety
    Example: "Those nervous moments before takeoff"
  • adjective:   excited in anticipation
  • adjective:   unpredictably excitable (especially of horses)