How do you pronounce wakan tankan nici un?

The vowel followed by n are all nasal, as in French un;this is usually indicated by writing the n above the line: wakan tanka nici un.

Since English does not have any nasal vowels the sounds are difficult to express using ordinary English; try saying ahwwith most of the sound coming down your nose and you will be close. The n is not pronounced at all, or only whispered. "C" in Lakota is always a ch sound.

So you say something like wah-kahwn tahwn -ka neechee uhn

Follow the link below for a very accurate website showing how all the sounds in Lakota are pronounced: