1. in a secretive or stealthy manner, trying to avoid being noticed

Examples

• She glanced furtively around the room before opening the letter.
• The cat moved furtively through the tall grass, stalking its prey.
• He furtively slipped the note into her backpack when no one was looking.
• The students whispered furtively during the exam.
• She furtively checked her phone under the desk during the meeting.
• The thief moved furtively between the parked cars.