"Fortuosity" is the first song in the 1967 motion picture The Happiest Millionaire which was written by the Sherman Brothers and performed by Tommy Steele playing the part of "John Lawless" (the butler).[1] Richard Sherman stated that the word meant "Faith and Good Fortune".[1] Apparently derived from "fortuitous", which refers to something that happens by fortune or chance,[2] "fortuosity" is a Disney neologism and has a more positive meaning than "fortuitous" or that word's standard noun form, "fortuity", which means accident, chance, or an accidental occurrence.[3] Steele also sings the song "I'll Always Be Irish" in the film.
"Fortuosity" has been covered by other performers:
The New Century Timepieces store on Disneyland's Main Street was named the Fortuosity Shop in October 2008.[6]
This song is also part of the BGM loop for Main Street, U.S.A. at Disneyland, Magic Kingdom, and Disneyland Paris since 1992.