If you installed a language pack for Microsoft Office, you can easily remove any editing language or font that you don't want or don't use. If you want to add a different editing language to your computer, you can follow the instructions at Change the language Office uses in its menus and proofing tools. If you want to add a new font see Download and install custom fonts to use with Office.
Click headings below for more information
: You can’t remove the primary language in the Enabled editing languages list. If a language is listed as your default language and you want to remove it, you must select a different language as the default language.
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Open a Microsoft Office program, such as Word.
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Click File > Options > Language.
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Under Choose Editing Languages, select the language that you want to remove, and then click Remove.
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If you create a document containing text in Japanese before deleting the Japanese editing language and fonts, the text remains in the document, even after you remove the Japanese editing language and fonts.
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If, before deleting the Japanese editing language and fonts, you create a document containing Japanese text and manually mark the proofing language of the text in the document as Japanese, the Japanese proofing language setting remains even after you delete the editing language and fonts.
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After you delete Japanese as an enabled language, Japanese continues to be listed in the Languages dialog box as a proofing language.
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In Control Panel, type Fonts in the search box at the top right.
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Under Fonts, click Preview, delete, or show and hide fonts.
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Select the font that you want to remove, and then click Delete.
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Delete the fonts that you don't want.
Click the Start button 
Remove languages and fonts on a Mac
To remove languages, see Language and Region Preferences.
To remove fonts, see Mac Basics: Font Book.
