Have you ever right clicked on a word that was spelled incorrectly and instead of clicking on the properly spelled word, you selected Add to Dictionary? Here's how to remove that word!
sudo nano ~/Library/Spelling/LocalDictionary
In that file, you'll find your misspelled word and can remove it from the list! Easy!
Of course, you can use a different editor, if you'd like.
Going forward, you could...
- Backup this file
- Add words to this file in bulk
- Develop a basic Bash script to add words to this file from a terminal