The crossword solution for the term 'CARRY ON WAYWARD SON' is SON, which is a three-letter word. The phrase 'Carry On Wayward SON' is a popular song by the band Kansas, released in 1976. It is one of the band's most recognizable and popular songs, and has been featured in many films, television shows, and video games. The song is about a man who is on a journey to find himself and his place in the world.