Related Clues:

• Dum-dum
• Scatterbrain
• Foolish person
• Hardly a brainiac
• Dullard
• Hinny's mother
• No rocket scientist
• Dostoyevsky title character
• Slow one
• Cabbagehead
• Dostoyevsky character
• Dingbat
• Bird that's more than rare
• Word said with a head slap
• Dostoyevsky's "The ___"