Proto-Algonquian *eθkwe·wa 'woman' becomes Arapaho hisei, Cheyenne hé’e, Gros Ventre iiθe, and Nitsitapi skiima "female animal" and -ohkiimi- "have a wife".
The Proto-Algonquian word *eθkwe·wa has evolved into words in Algonquian languages that convey the idea of a female animal or the concept of marriage, as seen in Arapaho hisei, Cheyenne hé’e, Gros Ventre iiθe, and Nitsitapi skiima.