supercalifragilisticexpialidocious

First attested in the 1940s, it was made famous by its use in a song of the same title in the movie Mary Poppins (1964), by songwriters Robert B. Sherman and Richard M. Sherman. Derived from Latin super (“beyond”) +‎ calor (“heat”) +‎ fragilis (“delicacy”) +‎ expiātiō (“satisfaction”) +‎ doceō (“teach”) + -ous. (Can this⁽⁺⁾ etymology be sourced?)

• (Received Pronunciation) IPA^(key): /ˌsuːpəˌkælɨˌfɹæd͡ʒɨˌlɪstɪkˌɛkspɪˌælɨˈdəʊʃəs/
• (General American) enPR: so͞o'pər-kăl'ĭ-fră'jĭ-lĭs'tĭk-ĕk'spē-ăl'ĭ-dōʹshəs, IPA^(key): /ˌsupɚˌkælɪ̈ˌfɹæd͡ʒɪ̈ˌlɪstɪkˌɛkspiˌælɪ̈ˈdoʊʃəs/

• Audio (UK)

  (file)

• Audio (US)

  (file)

• Rhymes: -əʊʃəs
• Hyphenation: su‧per‧cal‧i‧frag‧i‧lis‧tic‧ex‧pi‧a‧li‧do‧cious

supercalifragilisticexpialidocious (not comparable)

1. (humorous) Fantastic, very wonderful
   • 1964 August 27, Mary Poppins, spoken by Mary Poppins (Julie Andrews):

     It's supercalifragilisticexpialidocious.

   • 2010 March 15, Rose Madeline Mula, The Beautiful People and Other Aggravations, Gretna: Pelican Publishing, →ISBN, →OL, page 91:

     By comparison with the present transcribers, I'm sure my performance would be supercalifragilisticexpialidocious.

   • 2011, Mary B. Allberry, I Ain't Done Yet, Victoria: FriesenPress, →ISBN, →OL, page 91:

     This is a real biggie so pay attention—I still pinch myself occasionally to even believe I did this; it was supercalifragilisticexpialidocious.

• Often cited as an example of a very long word.

• → Italian: supercalifragilistichespiralidoso
• → Spanish: supercalifragilisticoexpialidoso

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• “supercalifragilisticexpialidocious”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.