Formal:
* Her sauciness during the meeting was inappropriate and unprofessional.
* The playwright used sauciness in the dialogue to add a touch of humor to the play.
Informal:
* The kid's sauciness was adorable, even if he did knock over my coffee.
* She walked into the party with a sauciness that demanded attention.
* He responded to her criticism with a sauciness that made her laugh.
Figurative:
* The painting was full of sauciness, with bold colors and exaggerated brushstrokes.
* The band's performance was filled with sauciness, full of energy and attitude.
Note: "Sauciness" can have a slightly negative connotation depending on the context. It can suggest a lack of respect or an overly confident attitude.
Let me know if you need more examples or want to explore specific contexts!