noun
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a book of specimens, esp of penmanship, for imitation
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a book for or containing documents
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informal to spoil one's reputation by making a mistake, offending against social customs, etc
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(modifier) trite or unoriginal
copybook sentiments
Etymology
Origin of copybook
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The blot may not be huge but it remains on Root's copybook.
From BBC • Nov. 10, 2025
Miyazawa produced a copybook finish in the 81st, running onto a superb through ball and directing her shot wide of Mikalsen.
From Washington Times • Aug. 5, 2023
Among Burke's epigrams are such copybook maxims as "The only thing necessary for the triumph of evil is for good men to do nothing."
From Salon • Jul. 1, 2023
The oil boom smudged its copybook when the Julian Petroleum swindle, with its Ponzi schemes and watered stocks, took down famous Angelenos and small-time investors.
From Los Angeles Times • Feb. 16, 2023
He’s making a determined effort to remove the blots from his copybook and keep his affairs in order.
From "The Diary of a Young Girl" by Anne Frank
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.