It has twice been proposed in the Navajo Nation Council to officially change the name from Navajo to Dine and both times the proposal was voted down. This was l

It has twice been proposed in the Navajo Nation Council to officially change the name from Navajo to Dine and both times the proposal was voted down. This was largely because the proposal was unpopular among members of the tribe. There are multiple generations that have grown up being Navajo, they think of themselves as Navajo, and they want to continue to be referred to as Navajo. Also, growing up (white) on the Navajo reservation, I was taught that Dine was the native language word for themselves, but no one ever expressed any desire for white folks to refer to them as Dine. They tended be private about their culture - there were aspects that were for them not for us, sometimes plainly and other times more subtly. Dine sometimes had that feel, like it was a private name amongst themselves, not a public name for outsiders to use. In other ways it was similar to German vs Deutsch, just a different word in a different language. It is more recently that some Dine activists have cast off the name Navajo as colonial and wish to be referred to as Dine, but as far as I can tell it still isn't the majority opinion.