How to paraphrase without plagiarising
Paraphrasing means putting a source's idea into your own words and sentence structure, then citing it. Here is a method that works, with examples markers accept.
To paraphrase a source, read the passage until you understand it, put it away, write the idea from memory in your own words and sentence structure, then check your version against the original and add a citation. The citation is not optional. The idea still belongs to the author, however different your wording is.
Learning how to paraphrase well is one of the skills that most separates a 2:1 from a 2:2, because it shows a marker you understood a source rather than rearranged it. It is also the most reliable protection against an accidental plagiarism finding.
Paraphrase, summary or quotation?
Each has a job. Choosing the right one is the first decision, before any rewriting starts.
| Technique | What it does | Use it when |
|---|---|---|
| Paraphrase | Restates one passage in your words at similar length | The idea matters but the exact wording does not |
| Summary | Condenses the main points of a longer text | You need the gist of a whole article or chapter |
| Quotation | Reproduces the exact words in quotation marks | The wording itself is what you are analysing |
Most academic writing should lean on paraphrase and summary. An essay built mainly from quotations leaves little room for your own analysis, and markers read it as a sign that the analysis is missing.
How to paraphrase in five steps
1. Read until you could explain it aloud
Read the passage, then the paragraphs either side of it. If you cannot explain the idea to a friend without looking, you are not ready to paraphrase it, and any attempt will lean on the original wording.
2. Close the source
Cover the page or switch windows. This single step prevents most accidental plagiarism, because it stops your eye borrowing the author's sentence shape.
3. Write the idea from memory
Write the point as you would explain it, in a sentence that fits your own paragraph. Start from a different angle than the author did. If they began with the cause, you might begin with the effect.
4. Compare with the original
Open the source again and check two things. Your version must keep the author's meaning, including any caution or qualification they included. It must also avoid their distinctive phrases. Any phrase you cannot improve on belongs in quotation marks.
5. Cite it straight away
Add the in-text citation as you write the sentence, not later. Citations added at the end of a project are the ones that go missing. Our Harvard referencing guideshows the format most UK departments use.
Paraphrasing examples that pass and fail
The passage below is an invented example source, written for this guide.
Original
Students who sleep for fewer than six hours before an examination tend to recall less of what they revised, even when they spent more hours revising.
Fails: word swapping
Learners who sleep for under six hours ahead of a test usually remember less of what they studied, even when they spent more time studying (Author, 2024).
This version keeps the original sentence structure and swaps words one for one. Even with a citation, most universities treat this as patchwriting, and similarity software will match it.
Passes
Extra revision does not appear to make up for a short night before an exam: students with less than six hours of sleep remember less, regardless of how long they studied (Author, 2024).
The second version keeps the meaning and the qualification, starts from a different point, and uses a new structure. That is what markers mean by your own words.
Why changing words is not enough
Swapping synonyms into an author's sentence is the most common paraphrasing mistake, and it is treated seriously because it keeps the author's thinking and presents the shape as yours. It also tends to produce awkward sentences, because synonyms are rarely exact.
A good test is to cover the original and read your sentence aloud. If it sounds like you, and it would still make sense next to your own paragraphs, it is probably a real paraphrase.
Paraphrasing a quotation
Knowing how to paraphrase a quote is useful when a quotation is doing work that a shorter restatement could do better. Remove the quotation marks, rewrite the idea using the five steps, and keep the citation. Many departments ask for the page number on a paraphrased quotation, so check your handbook.
Habits that prevent accidental plagiarism
Most plagiarism findings start in note taking, not in the essay itself. Mark every copied phrase in your notes with quotation marks and a page number, and write your own comments in a different colour. When you come back weeks later, you will know which words are yours.
That is the real answer to how to avoid plagiarism: cite every idea that came from a source, whether you quote it, summarise it or paraphrase it. Facts that are genuinely common knowledge, such as the date of a general election, do not need a citation. An argument, a finding or a statistic always does.
Paraphrasing tools and AI
Paraphrasing tools and AI chatbots will reword a passage in seconds, and that is exactly the problem. Many universities treat their use as unauthorised help, the output still needs citing, and the tools often change a claim's strength or meaning without making it obvious. Check your assessment rules first. If an allegation has already arrived, our guide to AI plagiarism allegations explains the process.
Our citation styles guide compares the main referencing systems if your department uses something other than Harvard.
If you want a second check on your citations before you submit, our referencing support audits every in-text citation and reference entry against your style, and flags passages where a paraphrase sits too close to its source.
Last updated: 14 September 2026 · Written by the AssignWise editorial team ·Spotted something wrong?
Frequently asked questions
Yes, every time. Paraphrasing changes the words but the idea still belongs to the original author, so it needs an in-text citation and an entry in your reference list. Leaving the citation off a paraphrase is plagiarism even when every word is your own.
There is no safe number. Technical terms with no real alternative, such as cognitive behavioural therapy, can stay as they are. Any distinctive phrase the author chose should either be rewritten or put in quotation marks with a citation.
It can be. Many UK universities treat AI rewriting tools as unauthorised help, and the output still needs citing because the idea is not yours. These tools also change meaning in ways that are easy to miss, so check your assessment rules before using one at all.
A paraphrase restates one specific passage in your own words at roughly the same length. A summary condenses the main points of a longer text, such as a whole article, into a few sentences. Both need a citation.
Harvard does not strictly require one, but many UK departments ask for page numbers on paraphrases of specific passages, because they help a marker find the original. Check your module handbook and follow it consistently.
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