blot one's copybook

A form of blot one's copy book — To damage one's own reputation through bad behavior.

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Meanings

verbblot one's copybook (third-person singular simple present blots one's copybook, present participle blotting one's copybook, simple past and past participle blotted one's copybook)

present singular third person blots one's copybook · participle present blotting one's copybook · participle past blotted one's copybook · past blotted one's copybook

  1. alternativeAlternative spelling of blot one's copy book.
Cite this entry
APA

blot one's copybook. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/blot%20one's%20copybook

MLA

“blot one's copybook.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/blot%20one's%20copybook. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “blot one's copybook,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/blot%20one's%20copybook.

Source: blot one's copybook on Wiktionary, CC BY-SA 4.0.