Brobdingnagian \brob-ding-NAG-ee-uhn\, adjective:
Of extraordinary size; gigantic; enormous.
Brobdingnagian is from Brobdingnag, a country of giants in Swift's Gulliver's Travels.

NEW WORD FOR MONDAY:
(and in my opinion the BEST WORD EVER in any language!)

SOVRAMAGNIFICENTISSIMAMENTE