Plagiarism — English definition

Defined in 3 courses:

Where it is taught

In use

When you use what you find, you have to know the line between a true paraphrase and plagiarism.

Research & Credible Sources

Skipping citation is plagiarism: presenting someone else's words or ideas as if they were your own.

Citing Sources: MLA Basics

Skipping that credit is plagiarism: presenting someone else's words or ideas as your own.

Integrating Evidence & Citation

Questions using plagiarism

Problem 1

A student copies a sentence directly from a website but changes two or three words, without using quotation marks or a citation. Is this plagiarism? Explain.
Answer and explanation

Yes. Changing only a few words is not the same as paraphrasing in your own words and sentence structure, and without a citation the reader would believe the idea and phrasing are the student's own.

Problem 2

A student copies a sentence from an article and changes only three or four words, adds no quotation marks, and includes no citation. Is this plagiarism? Explain.
Answer and explanation

Yes. Swapping a few words is not a genuine paraphrase — it keeps the source's sentence structure and phrasing, a practice sometimes called patchwriting — and without quotation marks or a citation, the reader would believe the phrasing and idea are the student's own. A real paraphrase rebuilds the idea in new words and structure and is still cited.

Problem 3

A student restates an idea from a source in genuinely original words and sentence structure, but includes no citation at all. Is this plagiarism? Explain.
Answer and explanation

Yes. Even a genuine paraphrase uses someone else's idea, so it must be cited. Without a citation, the reader assumes the idea is the student's own, which presents another person's thinking as original work — the definition of plagiarism, whether or not it was intended.

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