Related Clues:

• Rubbery item in a pencil case
• This might hide Hera's error!
• One works on paper (Times) with hesitation
• One might take off a few marks
• I might disappear when you use this
• Time right to involve opponents in rubber
• Pink part of a pencil
• Friend of the mistake-prone
• An Ed Sheeran song - or a Schwarzenegger movie?
• Need for a tough crossword, perhaps
• Tip for a revision?
• Applied to paper to have mistakes removed
• Make a mistake penning answer regularly? This might help
• Pencil add-on
• Mistake fixer