Related Clues:

• Sound from an exam cheater
• "Want to hear a secret?"
• Learn (of)
• Listen!
• When repeated, a cry of approval
• Verbal jab in the ribs
• 'You there!'
• "Hey, Mister!"
• Clandestine signal
• Surreptitious sound
• "Hey, Mac!"
• Word between now and this
• Secretive attention getter
• Lend an ear
• Fence’s utterance