To check spelling errors in a document, the word application uses the to determine appropriate spelling. internet built-in dictionary user-defined words other text in the document

The answer is built-in dictionary.

Most Microsoft Word versions come with a built-in dictionary for standard grammar and spellings. These dictionaries are not comprehensive. Word also has an additional option to add a spelling error to the dictionary so that the next time you type that same error, it will not come up as a spelling error. In addition, Word can use multiple custom dictionaries that allows you to supplement with the main dictionary and check the spelling of your documents.

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