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Avoid Plagiarism: What is plagiarism?

What is plagiarism and how to avoid it.

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What is Plagiarism?

According to Oxford Dictionary of English, plagiarism is "the practice of taking someone else's work or ideas and passing them off as one's own." Plagiarism is presenting someone else’s work or ideas as your own, with or without their consent, by incorporating it into your work without full acknowledgement. All published and unpublished material, whether in manuscript, printed or electronic form, is covered under this definition. Plagiarism may be intentional or reckless, or unintentional.


  • Turning in someone else's work as your own
  • Copying words or ideas from someone else without giving credit
  • Failing to put a quotation in quotation marks
  • Giving incorrect information about the source of a quotation
  • Changing words but copying the sentence structure of a source without giving credit
  • Copying so many words or ideas from a source that it makes up the majority of your work, whether you give credit or not 

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Plagiarism Definition and Types of Plagiarism

10 types of plagiarism in Research

In 2015, iThenticate have conducted a survey of scientific researchers, and identified ten common types of plagiarism in research.

1. Secondary source: inaccurate citation.

2. Invalid source: misleading citation, fabrication, falsification.

3. Duplication: self-plagiarism, reuse.

4. Paraphrasing: plagiarism, intellectual theft.

5. Repetitive research: self-plagiarism, reuse.

6. Replication: submission violation.

7. Misleading attribution: inaccurate authorship.

8. Unethical collaboration: inaccurate authorship.

9. Verbatim plagiarism: copy-and-paste, intellectual theft.

10. Complete plagiarism: intellectual theft, stealing.

Subject Guide

Yuening Zhang's picture
Yuening Zhang
Kelvin Smith Library 201-G