Related Clues:

• Ardent, as some collectors
• Like a 6-Down
• Not blasé
• Aggressively ambitious
• Beyond eager
• Enthused
• Like many a fanatic
• Inveterate
• Desirous
• Verging on fanatic
• Rabid fan
• "Want to grab a bite?"
• Very ambitious
• Needing a feeding
• Strongly motivated