Related Clues:

• 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
• Zest and exuberance
• Vigour, animation
• Energy and zest
• Capacity for activity
• Vigour, power
• Get-up-and-go, vitality
• Vigour, vitality
• Vigour, vim, vitality