You can directly edit the user dictionary file on MacOS by doing the following:
Open the Finder on the Mac if you have not done so already. Hit Command+Shift+G to open the Go To Folder window and enter the following path (you need to do this because the Library is usually hidden): ~/Library/Spelling/LocalDictionary
Open the LocalDictionary file in your text editor of choice, whether that is TextEdit, nano, BBEdit, or other (if you use a word processor make sure you save as plain text).
Type the word(s) you wish to add to the user dictionary, with each new word on a separate line.
Save the LocalDictionary file.
You may need to quit and relaunch some apps to have them use the changes you have made to the dictionary.
My latest blog post: Think for Yourself: In the end, everything is just an opinion. Be skeptical, and think for yourself! (posted 2026-04-25).
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