Related Clues:

• Sibilant "Hey!"
• Male title
• Soft "Hey!"
• Knightly address
• Knightly title
• Opposite of 38-Across
• Poitier title role
• Sound before 'Your fly's open'
• Titled Brit
• 'Over here'
• McCartney's title
• Start of a whispered comment, perhaps
• Subtle 'yo!'
• Word heard at boot camp
• ''You there!''