Related Clues:

• Auction bids
• Gestures 'yes'
• Grabs 40 winks
• Obeys the hypnotist, e.g.
• Short snoozes
• Unobtrusive signals
• Silently shows agreement
• Day breaks
• Starts to fall asleep
• Alarms often end them
• Fabric features
• Becomes careless
• Fatigue fighters
• Reenergizes, in a way
• Silently accedes