Stop Safari Autocompleting Words

I updated Safari on my MacBook Pro a few days ago, and now it tries to autocomplete words as I type. It's annoying, and it breaks my concentration as I write. I cannot find any setting to stop it. I see ways to stop autocompleting passwords, urls, and other things, but I don't want to turn those off. I want it to stop showing me the rest of the word it thinks I'm trying to type.