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Related Clues:
- Vigour
- Physicist's field
- Couch potato's lack, evidently
- Something needed for work
- Steven Chu's cabinet department
- What some bars supply
- E for Einstein
- Power or vigour.
- Capacity for action
- Power or vigorous activity
- Vigour or power
- Vigour, animation
- Capacity for activity
- Vigour, power
- Get-up-and-go, vitality