How do you say goodnight in Choctaw language?

There isn't a direct translation for "goodnight" in Choctaw. The closest translation would be:

"Chi howa!" which means "Sleep well!"

You can also say:

* "Chi okla!" which means "Sleep well!" (more formal)

It's important to note that Choctaw is a spoken language and there are variations in pronunciation and usage depending on the speaker's dialect.