Walapai is a specific term that refers to a Native American tribe living in Arizona. However, if you're looking for synonyms to describe the indigenous tribes of that area, there are many different options. Some other tribes in Arizona include the Navajo, Hopi, Apache, Pima, and Tohono O'odham. Each tribe has its own unique language, culture, and history. Some people may use the term "Native American" or "indigenous people" as a synonym for Walapai or any specific tribe. Still, it's important to recognize that each tribe is a distinct community with its own traditions and beliefs.