Synonyms for Inca (same or very similar meaning)
WordNet sense 1 (a member of the small group of Quechuan people living in the Cuzco valley in Peru who established hegemony over their neighbors to create the great Inca empire that lasted from about 1100 until the Spanish conquest in the early 1530s):
Incan, InkaFrom the ODE community, based on WordNetadd/edit