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.
For instance, with the rise of generative AI, policies must directly address academic integrity issues, like original thought and proper attribution for students, as well as strategies for teachers to combat plagiarism and foster critical thinking. Richard Carranza, Forbes.com, 2 June 2025 The company started 2024 with a roughly $500 million valuation and ended it with a valuation of about $9 billion, after attracting increasing investor interest amid the generative AI boom — as well as controversy over plagiarism accusations. Hayden Field, CNBC, 24 Apr. 2025 This isn’t the first time Channel 4 has been caught up in a plagiarism row. Max Goldbart, Deadline, 2 Apr. 2025 Formatting, bibliography, plagiarism checks, and 3 revisions are included in this price. Rowan Briggs, Mercury News, 24 Mar. 2025 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 14 Jun. 2025.

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

More from Merriam-Webster on plagiarism

Last Updated: - Updated example sentences
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