nervy

adjective4

1. •
   (UK) Feeling nervous, anxious or agitated.

   • Blackpool continue to thrive on the adrenalin rush of the end-of-season shoot-out and are heading for a second Wembley date in two years after negotiating a nervy path past Birmingham. — 2012
2. •
   (US) Having nerve; bold; brazen.

   • It takes a nervy man to promulgate such stuff, and Ted Nelson has made a career out of being nervy. — 1988
3. •
   Jittery; having unwanted signal characteristics.
4. •
   (no longer used) Strong; sinewy.

   • And, for those simple times, his garments were / A chieftain-king's: beneath his breast, half bare, / Was hung a silver bugle, and between / His nervy knees there lay a boar-spear keen […] — 1818