Related Clues:

• Reason to daydream, maybe
• Monotony in bedroom -- that's sad
• Lack of interest socialist's shown in fast economic growth
• Doldrums, good time to quaff claret
• Cause of yawns
• Tolerated party finale in glum tedium
• Along with pain, one of 'the two enemies of human happiness,' per Schopenhauer
• Monotony? Good time to pass round claret!
• One cause of yawning
• Did nurse prepare Mark for weariness?
• Apathy from communist in progress?
• Socialist in upturn shows apathy
• Yawning cause
• It may be inspired by a lack of inspiration
• Mental state induced by bedroom shenanigans?