Originally Posted by Stefan Blom

There are several options for disabling spellchecking (some of these are document-specific and others are installation-specific; see http://wordfaqs.mvps.org/MasterSpellCheck.htm).

However, if you want to suppress hyphenation, you must apply "Do not check spelling or grammar" formatting to the text in the document. You can apply this as a style or to the selected text via Review tab | Set Language.