If someone does something saucily, they do it in a bold and lively way, often with a bit of cheekiness or impudence.
Saucily can make people think of someone being a little bit sassy or mischievous.
Examples:
She saucily winked at him from across the room.
The cat saucily knocked the vase off the table.
He saucily stuck out his tongue at the teacher.
The squirrel saucily stole the nuts and ran away.
The little girl saucily skipped ahead of her mother.
The parrot saucily mimicked the sound of the phone ringing.