1. most bold, cheeky, or impertinent in a playful or disrespectful way
Usage: informal
2. most lively, spirited, or jaunty in manner
Usage: informal

Examples

• She gave the teacher the sauciest look when asked about her homework.
• That was the sauciest reply I’ve ever heard from a student.
• He wore his hat at the sauciest angle possible.
• The sauciest member of the group always spoke up first.
• Her sauciest comment made everyone laugh despite themselves.
• The child’s sauciest behavior came out when visitors arrived.