Related Clues:

• At pique's peak?
• Blowing one's top
• Plenty mad
• Made mad
• In a snit
• Ticked off, and then some
• Ranting and raving
• Needing to cool down, maybe
•     Steamed
• Sensitive
• Holding a grudge, say
• Carrying a grudge
• In need of kneading
• Word with thumb or loser
• Very mad