Related Clues:

• Physics concept
• Property of matter
• Lack of activity
• Resis-tance to change
• Disinclination to move
• Resistance to motion
• Idleness
• Impedance to progress
• Torpor
• Motion notion
• Sluggard's problem
• Lack of movement
• Newton subject
• Subject of Newton's first law of motion
• Immobility