Related Clues:

• ''Psst!'' follower, perhaps
• Hider's whisper, perhaps
• Response from another room
• Attention-getting cry
• ''Psst!'' follower, sometimes
• 'Is there an echo --?'
• Response to ''Where are you?''
• "Psst! __!"
• Cry after 'Psst!'
• 'Is it cold or is it me?' --
• Exist by nature
• Be intrinsic
• Arm waver's shout
• One possible answer to 'Where are you?'
• Movie response to 'Quick, let's hide!'