1. Easily agitated
   "a nervous addict"; "a nervous thoroughbred"
    
2. Characterized by or causing worry, tension or apprehension
   "those nervous moments before takeoff";
   - anxious, queasy, uneasy, unquiet
    
3. Excited in anticipation
   "The nervous performer waited backstage";
   - aflutter
    
4. Unpredictably excitable (especially of horses)
   "The nervous colt was difficult to train";
   - skittish, flighty, spooky [N. Amer, informal], skittery
    
5. Of or relating to the nervous system
   "nervous disease";
   - neural

Sounds like: neighservous

See also: antsy [N. Amer, informal], excitable, excited, fidgety, fretful, itchy, keyed-up, on edge, restless, tense, troubled, twitchy [informal]

Encyclopedia: Nervous