Office Settings & Configuration

How to Fix Microsoft Word Spell Check Flagging Part of a Correct Word

Phi Hung Vo Sep 30, 2026 868 views

Question details

Stop the spell checker from marking only a portion of a correctly spelled word as an error.

How to Fix Word Spell Check Flagging Part of a Correct Word

Product: Microsoft Word
Device & OS: not provided
Scenario: Editing a document, typically after copying and pasting text from other sources with different formatting.
Observed behavior: The spell checker underlines only part of a correctly spelled word because different characters within the same word have conflicting proofing-language settings.

Before you start

Before adjusting the language settings, press Ctrl + A to select your entire document so that the proofing language changes apply consistently to all text.

Solution 1Recommended

Reset the Proofing Language for the Entire Document

Applying a single, consistent proofing language to the whole document resolves character-level language conflicts caused by pasted text.

When text is pasted from web pages or other documents, it can carry hidden proofing-language tags. Resetting the language for the entire document clears these conflicting tags.

Select all text

Click anywhere in your document and press Ctrl + A to select all the contents.

Open Language settings

Navigate to the Review tab on the ribbon, click on Language, and then choose Set Proofing Language.

Clear automatic settings

Select your correct language from the list. Make sure to uncheck both the 'Do not check spelling or grammar' box and the 'Detect language automatically' box.

Apply changes

Click OK to apply the consistent proofing language to your entire selection.

Reset the Proofing Language for the Entire Document

Understanding Filled Checkboxes: If a checkbox appears filled with a solid square instead of a checkmark, Word has detected mixed settings in your selection. Click the box repeatedly until it is completely blank.

Solution 2

Check Proofing Language of Individual Words and Normal Style

If resetting the whole document does not work, target the specific problem words or adjust the default 'Normal' text style.

Manage Spell Check Easily with WPS Writer

WPS Writer provides an intuitive and seamless way to manage spell check languages, ensuring your pasted text is proofed correctly without frustrating partial-word flags.

1. Open your document: Launch WPS Writer and open the document you wish to edit.
2. Select the text: Press Ctrl + A to highlight the entire document to ensure consistent formatting.
3. Access spell check tools: Go to the Review tab on the top ribbon and click the Spell Check icon.
4. Set the proofing language: Click Set Language in the drop-down menu, choose your preferred language, and click Set as Default to prevent future conflicts.

Fully compatible with Microsoft Word documents (.docx)Straightforward spell check and proofing toolsFree and lightweight alternative to Microsoft Office

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Frequently Asked Questions

Why does Microsoft Word underline only half of a word during spell check?

This happens when different characters within the same word have conflicting proofing-language settings. It most commonly occurs after copying and pasting text from an external source that contains different embedded language tags.

How do I stop Word from automatically changing my proofing language?

You can prevent this by selecting your text, navigating to Review > Language > Set Proofing Language, and unchecking the box that says 'Detect language automatically'.

What does a filled square in the language checkbox mean?

A filled square indicates an indeterminate state, meaning your current text selection contains mixed settings. For example, part of your selection has 'Do not check spelling' enabled, while another part does not. Clicking the box will clear the setting for the entire selection.

Can font changes affect how spell check works?

Yes, occasionally complex formatting or font changes applied during a copy-paste action can interfere with how the word processor identifies the language boundaries, leading to partial word flags.

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