Origin of the Name
The term Kayapó (sometimes also "kayapó" or "caiapó") was first used at the beginning of the 19th century. The Kayapó themselves do not refer to themselves by the term used by neighboring groups to refer to them, which means "monkey-like", probably due to a ritual in which Kayapó men dress up as monkeys for several weeks, wear masks and perform short dances. Although they know that others call them this, the Kayapó call themselves Mebêngôkre, "men of the well/place".