Related Clues:

• Hard to swallow
• Beer
• Type of beer
• Acrid
• Harboring a grudge
• Acrimonious
• Rancorous
• Act nervously
• A sour English beer?
• English beer, sounds sour
• Resentful or angry through disappointment
• English beer
• Sour British beer?
• Resentful and cynical
• Tart or resentful