Related Clues:
- Weakened state
- Subject of the first law of motion
- Lack of energy
- Rundown condition
- Result of iron deficiency, perhaps
- Passivity
- It keeps things going
- Feebleness
- Physics concept
- Property of matter
- Couch potato's state
- Lack of activity
- Resis-tance to change
- Blood disorder causing weakness
- Hematology concern