If you like to use automatic hyphenation in MS Word, but you need to have one or more words ignore hyphenation and remain united,

You can disable hyphenation in an entire paragraph, by opening the Paragraph dialog, selecting the “Line and Page Breaks” tab, and checking the box for “Don’t hyphenate”, yet

To disable hyphenation for a single word, select this word and in the Review menu > Language > “Set Proofing Language” check the option “Do not check spelling or grammar.” Disabling proofing for this word disables its hyphenation.

If you use this function often, you can place the “Set Proofing Language” command in the Ribbon to open the relevant dialogue easily.

Enjoy!