Any custom dictionary that you create or edit within Word 2011 for Mac is used by all the other Office applications installed on your Mac. Also, if any changes are made to the list of words within a custom dictionary, it will be reflected within the proofing tools of all Office applications. You may add new dictionaries or edit them — but by default, each logged-in user has a default custom dictionary — not surprisingly, this is a file called Custom Dictionary.
Learn how to disable and enable custom dictionaries in PowerPoint 2011 for Mac.

