Related Clues:

• Social lightweight
• Tube's inner diameter
• Excessive studier
• Was worthy of
• Tedious one
• Tiresome type
• Bring to tears?
• Wonk
• Pocket protector wearer, in stereotypes
• Bully's victim, often
• Make holes
• Interest-reduction cause?
• Studious sort, and proud of it
• 'Happy Days' put-down
• Bookworm, in stereotypes