Related Clues:

• Furtive utterance
• Sound made with a cupped hand
• “Hey, over here!”
• "Hey you, c'mere!"
• Sound that will get your attention
• "Don't tell anyone, but . . ."
• "Hey, you there!"
• Secretive sound
• Hushed 'Hey!'
• "Hey!" in a library
• It may precede a tip
• Surreptitious signal
• 'Hey ... kid'
• ''C'mere!''
• "Ahem" alternative