You could use it anywhere you would use "daring" or "reckless". for example: "He had an audacious plan to swim across the English Channel at night."
Annabelle was so audacious that she called her teacher incompetent int he middle of class.
The audacious young man decided to climb the tallest mountain in the region with no prior experience.
Audacious means Extremely bold, courageous, dauntless. Foreg : Bear Grylls of Man vs wild is an audacious explorer. another meaning is aboriginal or extremely original . Foreg : Waney's family in Batman series had an audacious vision of the bright future of Gotham City .
The antonym of audacious is timid or cautious.
The hunter stalked silently through the forest, eyes trained on its prey.
He was an audacious explorer.
He was audacious in his pursuit of the movie star.
The audacious firefighter saved the two people in the burning building.
Annabelle was so audacious that she called her teacher incompetent int he middle of class.
Audacious means adventurous or bold. An example of using 'audaciously' in a sentence is 'His invitation to hike the glacier was audaciously tempting'.
Audaciousness is the abstract noun form for the adjective audacious.
The audacious young man decided to climb the tallest mountain in the region with no prior experience.
The man replied rather AUDACIOUSLY. :D
I am not writing a sentence using that word.
Walking the tightrope between the two high buildings on a windy day was an audacious stunt.
Unrattled.....
Brazen