Related Clues:

• Higher-sounding greeting
• Informal 19 across
• 'I'm talking to you!'
• Exclamation to call attention
• "Watch out!"
• Vocalized "Psst!"
• 'Ahem' relative
• 'Well, hey there!'
• "Yoo-hoo!"
• 'What's the big idea?'
• 'Whoa there!'
• 'Hello there'
• ''Watch where you're going!''
• 'I'm talkin' to you!'
• 'Watch it, mister!'