Related Clues:

• Having steam come out the ears, say
• Hoppin' mad
• Adjective from which John McCain hopes to disassociate himself
• Racked with wrath
• Extremely upset
• Not just annoyed
• Close to erupting
• Spitting mad
• Really ticked
• Out-of-sorts
• Fuming mad
• In a tiff
• Quite cross
• Rather more than miffed
• Mucho mad