Related Clues:

• Erratum
• Slip-up
• It's just not right
• Misstep
• Wrong move
• Wrongdoing
• Program problem
• Printing mistake
• Bobble
• Reason for a reduced grade
• Wild throw, e.g.
• ThiS, e.g.
• Bad throw, e.g.
• See 9-Across
• Key blunder