Sentences with On The Sly

She slipped the note to her friend on the sly during class.

He managed to take a selfie on the sly while no one was looking.

The spy exchanged information on the sly with his contact in the dark alley.

The teenager borrowed the car on the sly, hoping not to get caught by their parents.

The thieves entered the museum on the sly, avoiding security cameras.

The employee shared the confidential report on the sly with a competitor.

She smiled on the sly, knowing the surprise party was for her.

They whispered on the sly, plotting a secret adventure.