big
large
Atlantean
Brobdingnagian
Cyclopean
Gargantuan
Herculean
Homeric
abysmal
amazing
amplitudinous
astonishing
astounding
astronomic
astronomical
awesome
beguiling
bewildering
boundless
bulky
colossal
cosmic
cracking
elephantine
enigmatic
enormous
epic
exceptional
extensive
extraordinary
fabulous
fantastic
fascinating
galactic
giant
giantlike
gigantic
heroic
huge
immeasurable
immense
incomprehensible
inconceivable
incredible
indescribable
stupid
stupor
appal
astonish
majestic
marvelous
monumental
tremendous
horrendous