* The little girl had an audacious plan to climb the tallest tree in the park.
* The superhero made an audacious leap over the tall building.
* It was audacious of the small mouse to try and steal the giant's cheese!
* The artist made an audacious choice to paint the sky purple!
Explanation for kids:
"Audacious" means something that is bold, brave, and daring. It's like when you try something really hard or different, even if it might be a little scary!