You can use the Spelling dialog box
to inspect your worksheets for spelling errors. Excel 2013's spelling check feature
flags any text that Excel doesn't recognize as spelling errors and then lets you decide
how to resolve the errors. Excel uses a set of built-in dictionaries to compare the
in your worksheets to. If a word is not in the currently selected dictionary, Excel
flag it as an error. Keep in mind, however, not all words that aren't in the dictionary
are actual spelling errors, such as proper nouns. If a word that Excel believes is
error is similar to other words in the dictionary, the Spelling dialog box displays a list of suggested corrections that you can choose from to replace the misspelling. ...