Related Clues:

• Fill with fear
• Clock radio feature
• It's a real eye-opener
• Sleep trouble
• Intake interruption while asleep?
• Really bad music, to the listener
• Antitheft device
• Breathing irregularity
• Librarian's bane
• Wake-up call
• It's often made to get attention
• Sleep threatener
• Loud sound
• Feature of city life
• Clock-radio feature