Richard M. Sherman and Robert Sherman
Let’s go back to childhood and dive into Disney songs ! That unpronounceable song (or almost unpronounceable because it is easier to sing…) is part of the 1964 movie Mary Poppins and was written by the Sherman brothers who were two successful lyricists and composers often working for the Walt Disney Company and their theme parks.
Mary Poppins, because she wants to share her feelings after her victory at the racecourse, invents this astounding word, « Supercalifragilisticexpialidocious ».
The Sherman brothers defined that adjective as a synonym for fantastic, wonderful.
If you divide the word, they explained you found : super = up, cali = beauty, fragilistic = delicate, expiali = pay for, docious = teachable.
All together ? Supercali…