nervy in WordNet English dictionary

1. offensively bold
   "a brash newcomer disputed the age-old rules for admission to the club"; "a nervy thing to say"
   brash  cheeky  nervy 
   
2. being in a tense state
   edgy  high-strung  highly strung  jittery  jumpy  nervy  overstrung  restive  uptight 
   
3. showing or requiring courage and contempt of danger
   "the nervy feats of mountaineers"
   nervy