Related Clues:

• Grouch
• Poor loser
• Grump
• Poor sport
• Easily pissed-off type
• Bellyacher
• There's not much fun to be got from someone who can't take a joke
• Disgruntled person
• Unsportsmanlike sort
• Person who's grumpy as a result of migraine?
• Person who just can't lose?
• Peeved person
• One unlikely to shake hands
• Source of postgame complaints