Similarity and source review
Review Source Similarity in Microsoft Word’s Editor
Review Source Similarity in Microsoft Word’s Editor. Follow the documented access conditions, inspect source matches and keep the final document version clear.
In supported Microsoft 365 versions of Word, Editor can check text for similarity to online sources. Use that feature to inspect matched passages and their citations, rather than treating the percentage as a verdict that a document is or is not plagiarized. Availability depends on the version and account you are using.
Open the documented similarity command
Microsoft’s documented route is Home → Editor, then Similarity → Check for similarity. When the check finishes, inspect the listed passages and linked sources. This is a specific Word Editor feature; it should not be confused with Word’s ordinary Find command or a universal feature in every Office application.
If the Similarity section is missing, check the Microsoft documentation and the account or application edition. Do not repeatedly search unrelated ribbon tabs for a command that your installation does not expose. An institution may provide a separate approved checking service with its own workflow.
Read the matched source in context
Open a match and compare the complete passage with its source. Determine whether the document quotes the wording, paraphrases an idea or uses a common expression. Keep surrounding attribution visible. A copied text selection that omits a footnote can make the writing appear uncited even when the full document contains the reference.
As an illustrative review, suppose a paragraph repeats a source’s sentence about a survey of forty participants. Check the source’s actual sample size, the wording used and the attribution. Replacing forty with another number to reduce overlap would create a factual problem rather than improve originality.
Review suggested citations before accepting them
Word can assist with adding a citation to a matched passage. Check its author, title, date and location against the source, then apply the citation style required for the document. A generated citation is a starting point for review, not proof that the underlying source supports every surrounding claim.
If exact wording is retained, use quotation treatment appropriate to the assignment or publication. If you paraphrase, preserve the meaning and still credit the source’s contribution. A change of wording does not erase the need for attribution when the idea or evidence comes from that source.
Keep the document version and scope clear
Run the review on the file you intend to submit, after the final substantial edit. Compare its title and ending with your saved draft when several versions exist. Changes made after a report can introduce new wording or remove citations, so an earlier result should not be attached uncritically to a later version.
Review separate text regions and source notes according to the document’s requirements. A similarity check concerns the text it processes; it does not validate every fact, image license, quotation boundary or bibliography entry in the document. Those remain part of the editorial review.
Use local comparison for a narrower question
The Text Diff Checker here can compare two passages you provide. It does not reproduce Word’s online-source search or an institutional submission database. Use it to inspect a known source alongside a draft, with the attribution and surrounding context retained.
Keep notes for unresolved matches and ask the responsible instructor or editor how the applicable policy treats them. A low overlap percentage is not a universal clearance, and a properly quoted passage can still produce a match. Correct the source-use issue directly instead of optimizing only the displayed number.
Keep the next review action clear
Keep a short unresolved-source list while reviewing. A broken source link or incomplete bibliographic detail is a question to investigate, not a reason to replace it with a guessed author or publication date. Retain the relevant passage until the source can be checked properly.
Microsoft documentation
Word’s similarity-check workflow was reviewed on 29 September 2026. This guide describes that documented feature and does not claim a live test of a signed-in Word account.
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