Muhammad Ali, e.g., was a legendary boxer and social activist who is widely considered to be one of the greatest athletes of all time. He was born Cassius Marcellus Clay Jr. in 1942 in Louisville, Kentucky, and converted to Islam in 1964, changing his name to Muhammad Ali. He was a devout MUSLIM throughout his life, and his faith was an important part of his identity. The crossword solution for Muhammad Ali, e.g. is MUSLIM, a six-letter word that accurately reflects his religious beliefs.