Definition of supercalifragilisticexpialidocious in English:

supercalifragilisticexpialidocious

(also supercalifragilistic)

adjective

informal
  • Extraordinarily good; wonderful.

    ‘the only word to characterize Kepler's discoveries was ‘Supercalifragilisticexpialidocious’’
    ‘a supercalifragilistic day of fun’
    • ‘It is hands down the most supercalifragilistic place in the world and the moment I arrived I was panic-stricken at the thought of leaving.’
    • ‘Case in point: The supercalifragilisticexpialidocious Planetree Alliance.’
    • ‘It's been a supercalifragilistic autumn!’
    • ‘Isn't it absolutely supercalifragilisticexpialidocious that Alan Shearer got a step closer to a trophy with Newcastle this weekend?’
    • ‘Here's New Yorker cartoonist Matthew Diffee with one of his inexplicably rejected cartoons, from last week's supercalifragilistic Rejection Show (which Diffee co-founded, along with cheerfully deadpan host Jon Friedman).’
    • ‘Although it misses the mark on a couple of occasions, I'm sure the families who are sure to flock to it in their thousands will find it to be just supercalifragilisticexpialidocious.’
    very good, superb, outstanding, magnificent, of high quality, of the highest quality, of the highest standard, exceptional, marvellous, wonderful, sublime, perfect, eminent, pre-eminent, matchless, peerless, supreme, first-rate, first-class, superior, superlative, splendid, admirable, worthy, sterling, fine
    View synonyms

Origin

1940s: apparently a fanciful formation based on super, popularized by the 1964 film Mary Poppins.

Pronunciation

supercalifragilisticexpialidocious

/ˌsuːpəkalɪfradʒɪlɪstɪkˌɛkspɪalɪˈdəʊʃəs/