I'll have to look into that. It still won't let me use the F word, for example. It'll give me pretty much any other possible word as an alternative, no matter how hard I try. But this may be because I do most of my regular typing by swiping. I see that I can type in 'fuck' manually and it won't try to replace it.
I'm right at the edge of turning off autocorrect altogether, just because it has a habit of changing previous words, not just the one I'm typing. If I only ever talked with very generic English this might be okay, but when I'm using subject matter lingo it fails utterly and becomes a tremendous nuisance to try and convince it to leave that text alone. Sometimes even deleting the correction and re-typing what you want doesn't stop the behavior.