The Only Use

audacious
in
The Scarlet Letter
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Thence, with native audacity, but still with a reserve as characteristic, she flew into the midst of a group of mariners, the swarthy-cheeked wild men of the ocean, as the Indians were of the land; and they gazed wonderingly and admiringly at Pearl, as if a flake of the sea-foam had taken the shape of a little maid, and were gifted with a soul of the sea-fire, that flashes beneath the prow in the night-time.†
p. 228.2

audacity = boldness and daring

Definitions:

(1) (audacious)
bold and daring (inclined to take risks) -- especially in violating social convention in a manner that could offend others
(2) (meaning too rare to warrant focus)