Related Clues:

• Einstein's opposite
• He's not a Mensa candidate
• Dim-bulbed sort
• Box or proof preceder
• Definite Mensa reject
• Block-head
• Definitely no genius
• Dunce-cap candidate
• Jackass
• One with a conical cap
• Ecclesiastical rule
• One who isn't quick
• General rule
• Easily-manipulated type
• Simple guy