“A Grammar of 'Onk Akimel O'odham.” The ’Onk Akimel O’odham language, or simply O'odham, is one of the two languages (along with Piipaash/Maricopa) spoken by the Native American people of the Salt River Pima-Maricopa Indian Community (SRPMIC), one of several tribes neighboring ASU. O'odham is an endangered language. The community has undertaken intensive action to revitalize O'odham, with the aim of providing a rich set of learning tools for the next generation of speakers. This book project describes the grammatical structure of the O'odham language.