Emily Dickinson Lexicon

AU-DA'CIOUS, a. [L. audax; Fr. audacieux from L. audeo, to dare. The sense is, advancing forward.]

1. Very bold or daring; impudent; contemning the restraints of law, religion or decorum; used for bold in wickedness; applied to persons; as, an audacious wretch.
2. Committed with, or proceeding from, daring effrontery, or contempt of law; as, an audacious crime.
3. Bold; spirited. – Johnson.