Wii U browser: Typo added by accident to predicative dictionary. How to add or remove words from it?

I have a question about the Wii U internet browser.  You know that string of predicative words that come up on the GamePad when you're typing a word from the in-browser dictionary? Well for some reason as I was typing it added...a typo of a word I was typing to the predicative dictionary, and now I can't figure out how to remove it.  Heck, I have no idea how it was added in the first place.  Seeing as how it seems possible to add words to this predicative dictionary on this browser unlike on the Wii and 3DS browser, does anyone know how you can add words to it...and subsequently remove them too?