How to Add a Custom Word to Mac's Apple Dictionary Zach (199) Total time: 1 minute Updated: October 14th, 2019ShareFacebookRedditTwitterPinterestEmailText messageFavoriteComment While we were building howchoo we realized that our Macs wouldn't recognize the word. This led us to search for a way to add the term "howchoo" to our Macs' dictionaries. Here's how you do it.Table of ContentsInterests Jump to step Intro1. Open TextEdit2. Type the word you'd like to add3. Add it to the dictionary1Open TextEdit Navigate to Applications > TextEdit.2Type the word you'd like to add Enter the new word you'd like to add.3Add it to the dictionary Right-click your new word and select Learn Spelling.