Know why cattywampus was trending last week?
1722, from Choctaw Chahta, of uncertain meaning, but also said to be from Spanish chato "flattened," for the tribe's custom of flattening the heads of male infants. As a figure skating step, first recorded 1892. Sometimes used in 19c. American English as typical of a difficult or incomprehensible language (cf. Greek in this sense from c.1600).