Historical clue formulations

• Clear, as a board — 2026-09-08
• Clear — 2026-08-30
• Wipe out — 2026-06-23
• DO NOT ___ — 2026-05-30
• Wipe clean — 2026-04-16
• Wipe off, as a blackboard — 2026-04-06
• Clear a sentence? — 2026-02-13
• Wipe clean — 2026-02-09
• Clear, as a whiteboard — 2026-01-07
• Rub out — 2025-11-24
• Clear one's name, say? — 2025-11-07
• Wipe — 2025-10-17
• Wipe the slate clean? — 2025-10-06
• Remove, as pencil marks — 2025-08-25
• Make vanish — 2025-07-11
• Wipe, as from memory — 2025-07-06
• Delete — 2025-06-03
• Undo — 2025-03-27
• Wipe out at one's desk, say — 2024-12-22
• Remove from memory — 2024-06-01
• Empty the Trash? — 2024-05-17
• Clear of chalk, say — 2023-11-13
• Wipe clean — 2023-11-05
• Wipe — 2023-07-20
• Clear the board — 2023-02-15
• Wipe — 2022-12-23
• Shake an Etch A Sketch, say — 2022-09-20
• Off the mark? — 2022-04-23
• Clear — 2022-04-13
• Take off the board — 2022-04-03
• Make changes to the board — 2021-11-03
• Backspace through, say — 2021-09-28
• Rub out — 2021-07-23
• Shake an Etch A Sketch, e.g. — 2021-06-20
• "Do not ___" (blackboard words) — 2021-05-10
• Clear — 2021-02-20
• What most pens can't do — 2021-02-07
• Start over on a blackboard — 2020-12-15
• Wipe, as a hard drive — 2020-11-25
• Clear, as a computer's memory — 2020-09-09
• Wipe the board clean — 2020-07-27
• Strike — 2020-07-12
• Get rid of, as pencil marks — 2020-03-23
• Rub out — 2020-03-10
• Obliterate — 2019-12-30
• Wipe out — 2019-08-09
• Eliminate — 2019-04-06
• Make blank — 2019-03-31
• Clear the boards — 2018-12-26
• Leave no trace of — 2018-12-12