How to disable autocorrect for certain words?

Auto correct for the word “Naive” will auto correct to “Naïve”, which, while it is a valid spelling, it then highlights as being misspelled, which you can then correct, back to naive, but it’s an additional, unnecessary step, since I had the correct, English version in the first place. Is there a way to remove this word from the auto correct dictionary?

And a little bit of digging on my own found the solution: Tools- auto correct options then find the offending word in the list and delete it.