Related Clues:

• Alternative to 'Hey!'
• Soft "Over here!"
• Cheater's sound during a test
• Hushed "Hey!"
• Polite interruption
• ''Hey!''
• It ain't quite "Hey!"
• ''Hey!'' in a library
• ''Can I get a word in?''
• Sound of throat clearing
• Covert sound
• 'Uh, excuse me'
• Possibly passive-aggressive reprimand
• Signal from a man in a trenchcoat
• Subtle ''Hey you!''