Definition of supercalifragilisticexpialidocious in English:

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supercalifragilisticexpialidocious

Pronunciation: /ˌso͞opərˌkaləˌfrajəˌlistikˌekspēˌaləˈdōSHəs/
(also supercalifragilistic)

adjective

informal
Extraordinarily good; wonderful: the only word to characterize Kepler’s discoveries was ‘Supercalifragilisticexpialidocious’ a supercalifragilistic day of fun
More example sentences
  • Isn't it absolutely supercalifragilisticexpialidocious that Alan Shearer got a step closer to a trophy with Newcastle this weekend?
  • Case in point: The supercalifragilisticexpialidocious Planetree Alliance.
  • 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.

Origin

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

For editors and proofreaders

Syllabification: su·per·ca·li·fra·gil·is·tic·ex·pi·a·li·do·cious

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