Related Clues:

• Greedy
• Hungry for more
• All in
• Like a lemon
• More than just interested
• Dyed-in-the-wool
• Devouring
• Like bread dough
• Like diehard rooters
• Like diehard fans
• Eager, plus
• Energized
• Fervent
• Eager, and then some
• Extremely enthusiastic