Kumu means source, foundation, basis, root. Nānā i ke kumu means to look at the source, and we use the same word for teacher. ‘O wau ke kumu—I am the teacher.
Although it is often mispronounced, muʻumuʻu is one of the best-known Hawaiian words. It means “cut off, shortened,” and is the name so often given to a loose-fitting gown, because the yoke was often missing, and the sleeves short. Its first meaning, however, is “amputated, maimed.”