The term 'Oklahoma Athlete' can be summarized by the crossword solution 'SOONER, ' which is a six-letter word. The term 'SOONER' is derived from the University of Oklahoma's athletic teams, known as the Oklahoma Sooners. The term was first used in the late 19th century to describe settlers who illegally entered the Unassigned Lands in what is now Oklahoma before the official start of the Land Run of 1889. The term has since been adopted by the University of Oklahoma and its athletic teams, and is now used to refer to any athlete or fan associated with the university.