If you're an auteur, you make movies that show off your personal style and vision, and you make those movies exactly the way you want: you won’t let any studio executives force you to change the ending.
The word auteur came into English from the French word of the same name, meaning literally “author.” If you’re an auteur, you are truly the author of your own movie. Most movies have a lot of different people contributing to the final product, but an auteur insists on having the final say, and hates it when her vision is compromised. The word even has an uppity feel and sound to it. Pronounce it "oh-TUR."