plagiarism

noun

pla·​gia·​rism ˈplā-jə-ˌri-zəm How to pronounce plagiarism (audio)
also -jē-ə-
1
: an act or instance of plagiarizing
2
: something plagiarized
plagiarist
ˈplā-jə-rist How to pronounce plagiarism (audio)
also -jē-ə
noun
plagiaristic
ˌplā-jə-ˈri-stik How to pronounce plagiarism (audio)
also -jē-ə-
adjective

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Common Misspellings

plagarism, plagerism, plagirism

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The Kidnapping Roots of Plagiarize

If schools wish to impress upon their students how serious an offense plagiarism is, they might start with an explanation of the word’s history. Plagiarize (and plagiarism) comes from the Latin plagiarius “kidnapper.” This word, derived from the Latin plaga (“a net used by hunters to catch game”), extended its meaning in Latin to include a person who stole the words, rather than the children, of another. When plagiarius first entered English in the form plagiary, it kept its original reference to kidnapping, a sense that is now quite obsolete.

Examples of plagiarism in a Sentence

The student has been accused of plagiarism.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
If the assignment is to write an original composition on a particular topic, plenty of such compositions already exist, and many tools can generate essays that even a plagiarism-checker will deem to be original. Ethan Siegel, Big Think, 25 Mar. 2026 Physician David Agus, who teaches at the University of Southern California Keck School of Medicine, held his ghostwriter responsible for the many instances of plagiarism that were identified in his popular science books. Emily Hodgson Anderson, The Conversation, 25 Mar. 2026 If, by our standard, that is glaring plagiarism, the obvious retort is that the standard of the early seventeenth century was a very different beast. Anthony Lane, New Yorker, 22 Mar. 2026 Chandraker emphasized the importance of establishing safety measures to prevent a proliferation of plagiarism or excess automation. Noah Lyons, San Diego Union-Tribune, 16 Mar. 2026 See All Example Sentences for plagiarism

Word History

First Known Use

1621, in the meaning defined at sense 1

Time Traveler
The first known use of plagiarism was in 1621

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Cite this Entry

“Plagiarism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plagiarism. Accessed 1 Apr. 2026.

Kids Definition

plagiarism

noun
pla·​gia·​rism ˈplā-jə-ˌriz-əm How to pronounce plagiarism (audio)
1
: an act of plagiarizing
2
: something plagiarized
plagiarist noun
plagiaristic adjective

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