Related Clues:

• 'I give!'
• Bo-o-o-o-ring
• Pooped out
• Possibly beyond recharging
• No longer around
• "--- Mr. Nice Guy!"
• Over the stadium wall
• Out of juice, as a battery
• Grateful follower?
• ''Enough!''
• Kind of duck
• 'I've had enough'
• Decamped
• Word with beat or heat
• No longer working