Related Clues:

• Sleep interruption
• In comics, it's represented by a string of Z's
• Soft palate resonance
• Cacaphony
• Kipling's ''Gunga ___''
• Boring event
• Nighttime noise
• Sound of z's
• Nasal noise
• Bored response
• Kipling's Gunga
• Slumber stopper
• Real bore
• Sleep sound
• Nap noisily