Related Clues:

• Having a kick
• Hardly reluctant
• Ardent, as some collectors
• Like a 6-Down
• Not blasé
• Like sharp cheddar
• Like grapefruit juice
• Beyond eager
• Sharp on the tongue
• Enthused
• Like many a fanatic
• Inveterate
• Like bread dough or beer
• Verging on fanatic
• Rabid fan