Related Clues:

• Strong feeling
• Get-up-and-go attribute
• Enthusiastic devotion
• Extreme enthusiasm
• Inner fire
• Great enthusiasm
• Ardour
• Fanaticism
• Passion, to Pope
• Enthusiastic emotion
• Follower's fervor
• Fanatic's quality
• Antithesis of apathy
• Prompt willingness
• Fanatic's feeling