Related Clues:

• It keeps the ball rolling
• Church service
• Part of Einstein's equation
• It may be high on weekends
• Slothfulness
• Type of production
• Father's concern
• Physics amount
• Word with transit or appeal
• Crowd
• Inaction
• Component of 'E = mc2'
• Gather together
• Couch potato quality
• Component of E=mc2