Related Clues:

• Foaming at the mouth
• Seething
• Beside oneself
• Angry, and then some
• Infuriated
• Raging mad
• Spitting mad
• Fuming mad
• Boiling over
• Flushed with anger
• Very cross
• Really, really 16-Down
• Apoplectic
• Angry to the max
• More than angry