Related Clues:

• Taedium vitae
• Yawn producer
• 'The scourge of the fashionable world': Schopenhauer
• Result of being in a rut
• Lack of excitement
• Banality
• Lack of interest
• Yawn-inducing state
• Feeling of boredom
• Ennui cause
• Listless feeling
• Ho-hum state
• Boring quality
• Blah feeling
• Cause of some sighs