nervy

adj

1. (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.”

2. (British)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.”

   “She has been asked on a date to see The Barber of Seville in the company of society’s wealthiest and most eligible bachelor, the Hon Jeremy Malcolm (Ṣọpẹ́ Dìrísù) who is bored by her nervy and untutored chatter.”

3. (archaic)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 […]”

4. Jittery; having unwanted signal characteristics.