But there’s no obvious way to remove a word from the dictionary if you accidentally add one. So if you add a custom word to your dictionary in one application, other Mac apps won’t detect it as a typo in the future. Most Mac applications use the operating system’s spell check feature, and share the same personal dictionary.

Recognizing that people may change their minds, Word allows you to edit its custom dictionary, to remove words you may have added accidentally. When you choose the Add to Dictionary command in Word 2013, the given word is placed into the custom dictionary.