Related Clues:

• Exhausted, as a battery
• Chain units
• Unpopulated
• Like some batteries
• Dull, as a party
• "In the Dark" band's nickname, with "the"
• __ ringer
• Ball park figure
• Try to land
• In need of charging, as a cell phone
• Defunct
• Breathless?
• Beyond tired
• ___ as a doornail
• Very, very tired