Overview
"Supercalifragilisticexpialidocious" is a song and single from the 1964 Disney musical film Mary Poppins. It was written by the Sherman Brothers, and sung by Julie Andrews and Dick Van Dyke. It also appears in the 2004 stage show version.
Because Mary Poppins was a period piece set in 1910, songs that sounded similar to songs of the period were wanted. The movie version finished at #36 in AFI's 100 Years...100 Songs survey of top tunes in American cinema.
Story context
The song occurs in the chalk-drawing outing animated sequence, just after Mary Poppins wins a horse race. Flush with her victory, she is immediately surrounded by reporters who pepper her with questions and suggest that she is at a loss for words. Mary disagrees, saying that at least one word is appropriate for the situation, and begins the song.
Word meaning and general origin
The word is a compound word, and said by Richard Lederer in his book Crazy English to be made up of these words: super- "above", cali- "beauty", fragilistic- "delicate", expiali- "to atone", and -docious "educable", with all of these parts combined meaning "Atoning for being educable through delicate beauty."
The Oxford English Dictionary first records the word (with a spelling of "supercaliflawjalisticeexpialadoshus") in the column titled "A-muse-ings" by Helen Herman in the Syracuse University Daily Orange, dated March 10, 1931. In the column, Herman states that the word "implies all that is grand, great, glorious, splendid, superb, wonderful".
From Wikipedia (CC BY-SA 4.0).