supercalifragilisticexpialidocious

UK /ˌsuːpəkælɪˌfɹæd͡ʒɪlɪstɪkˌɛkspiælɪˈdəʊʃəs/US /ˌsupəɹˌkæləˌfɹæd͡ʒəˌlɪstɪkˌɛkspiˌæləˈdoʊʃəs/

adjective1

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(humorous) Fantastic, marvellous, wonderful.
- Supercalafajalistickespeealadojus; [or] The super song, by Patricia Smith [pseud.] and Don Fenton [pseud.] © Life Music, inc. New York; 24Sep51; EP58001. — 1951