Related Clues:

• Overly enthusiastic
• Foaming at the mouth
• Word for extremists
• Extreme, as a fan
• Fervent
• Extremely enthusiastic
• Extremely eager
• Zealous, as a fan
• Hydrophobic
• Like a mad dog
• Zealous and then some
• Overly eager
• More than enthusiastic
• Raging mad
• Enthusiastic and then some