nervy

Arrogantly impudent; brazen.

Showing or requiring courage and fortitude; bold.

Jumpy; nervous.

Full of muscular force; sinewy.

Vigorous; sinewy; strong, as if well-nerved or full of nervous force.

Courageous; having or exhibiting fortitude or nerve.

Strong; sinewy.

Offensively bold or presumptuous; insolent; cheeky; pushy.

Exhibiting courage or daring; bold; plucky.

Nervous{6}; apprehensive; edgy{1}.