I intentionally misspell "reptilian" as "Reptillian" when referring to a race in my comic. Autocorrect wants to murder me, so I save it as a word.
As well as Kéhuégonéa and a buncha words in the native tongue like Barkoré, Z'hue'égo, and Vun. Kéhuégonéans also add "-ie" to the ends of verbs to name their tools. For example, knives are "stabbies".
As you can probably guess, if I don't save these words Microsoft Word will have a stroke.