big
extraordinary
large
Atlantean
Brobdingnagian
Cyclopean
Gargantuan
Herculean
Homeric
abysmal
amazing
amplitudinous
appalling
astounding
astronomic
astronomical
awe-inspiring
awesome
awful
boundless
bulky
colossal
cosmic
cracking
dire
direful
divine
dread
dreaded
dreadful
elephantine
enormous
epic
exquisite
extensive
fantastic
fearful
fell
flabbergasting
formidable
frightful
galactic
ghastly
ghoulish
giant
giantlike
gigantic
gilt-edged
glorious
considerable
constant
immense
incredible
terrible
horrendous
stupendous