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Adjective: Brobdingnagian  ,brób-dig'na-gee-un or ,brób-ding'na-gee-un
  1. Unusually great in size or amount or degree or especially extent or scope
    "Brobdingnagian government spending";
    - huge, immense, vast
  2. Huge; relating to or characteristic of the imaginary country of Brobdingnag

See also: big, large

Encyclopedia: Brobdingnagian