Kaka's full name is Ricardo Izeson dos Santos Leite, and "Kaka" is his nickname. According to Portuguese pronunciation, the stress of "Kaka" is on the second syllable. In Portuguese, "Kaka" is the abbreviation of "Ricardo". When Kaka was young, his brother Rodrigo couldn't spell the pronunciation of "Ricardo", so he called his brother "Kaka" , this nickname has been used to this day.