Related Clues:

• See 16
• Offside player's lapse
• Failure to maintain standard circuits ending in catastrophe
• Lose faith in pleas?
• Piano is left in back, an oversight
• Backward students demonstrate human fallibility
• Students about to make a mistake
• Piece of paper for erratum
• Escape with undergarment
• Hot soup, gentle if possible, said 1 across
• Run out, legs extended by a quarter
• Opposite of beginner's error
• Backing some students is a mistake
• Left before recess — a blunder
• Oversight! Right out of cultured pearls