Repine, 4 letters
A Stooge, about 11, has nerve, 5 letters
Admirable spirit, 5 letters
Audacity, 5 letters
Audacity, slangily, 5 letters
Boldness, 5 letters
Brashness, 5 letters
Chutzpa, 5 letters
Courage, 5 letters
Courage, in slang, 5 letters
Daring, 5 letters
First mass-marketed soft drink, 5 letters
Get-up-and-go, 5 letters
Gumption, 5 letters
Guts, 5 letters
Gutsiness, 5 letters
Know-how, 5 letters
Nerve, 5 letters
Nerve, in slang, 5 letters
Once-popular soft drink, 5 letters
Pep, 5 letters
Personality, 5 letters
Pluck, 5 letters
Pluckiness, 5 letters
Plucky courage, 5 letters
Spirit, 5 letters
Spunk, 5 letters
The right stuff, 5 letters
True grit, 5 letters
Vigor, 5 letters
Vigor, slangily, 5 letters
(informal) fortitude and determination, 5 letters
Bolivian Indian, 4 letters