adj. fantastic, wonderful, fabulous; word used by children as a senseless word to express approbation (from a song sung in the movie "Mary Poppins")
SUPERCALIFRAGILISTICEXPIALIDOCIOUS
Meaning of SUPERCALIFRAGILISTICEXPIALIDOCIOUS in English
Explanatory English dictionary bed edition. Толковый словарь английского языка Редакция bed. 2012