Related Clues:

• Sound of call to hear a secret
• Whispered exclamation to attract attention
• Sibilant whisper to attract attention
• Sibilant interjection to call attention
• Sibilant sound made to attract attention
• Sound to call quietly
• Soft sound to get someone's attention
• Whispered attention-getter
• Whispered message lead-in, perhaps
• Cheater's whisper
• Surreptitious summons
• Conspiratorial "Hey!"
• Soft "Yoo-hoo!"
• After thought, the saint said this for attention
• Sibilant "Over here!"