Tools → Language → Set Language
A default language is selected when Word is installed, along with dictionaries and grammar-checking rules for that language. To change to a different language for selected text within a document, choose Tools → Language → Set Language (Figure 9-2).
Figure 9-2. Picking a language and its accompanying formats for selected text
A checkmark next to a language in the “Mark selected text as” list means that a dictionary and set of grammatical rules are installed for that language. If a checkmark does not appear, only the document formatting for that language is installed. This feature makes it possible to check the spelling of a foreign word or phrase used in a document crafted in your native language. For example, to use a French figure of speech such as c’est la vie (such is life) in an English-based document, select the phrase and choose French as the language for that selected text. “C’est” will be underlined in red until you make this choice.
If you don’t want Word to check spelling and grammar in the new language, check the “Do not check spelling or grammar” option in the Language dialog box.
Turn on the “Detect language automatically” option to have Word try to determine the language being typed in based on content. This option can produce undesired results if you tend to use foreign words or phrases mingled with a primary language—using ...