Related Clues:

• Hello
• Call to attention?
• Long-distance call?
• Word of protest
• Word repeated by Fat Albert
• Chocolaty drink brand
• "Stop right there!"
• "Anybody home?"
• "Hands off!"
• 'Get back here!'
• "Ahem" cousin
• "Now, wait just a second!"
• 'Hello-o-o!'
• Word accompanying a wave
• Kin of 'pssst!'