Related Clues:

• About to go through the roof
• Ready to blow one's top
• More than mad
• As mad as a wet hen
• Wearing enough layers
• With feathers ruffled
• Really 16-Down
• Reheat in the oven
• Feeling furious
• Angry and then some
• Opposite of cool
• Close, in a search
• Foaming at the mouth, so to speak
• Quite angry
• Apoplectic