Atlantean
Brobdingnagian
Cyclopean
Herculean
Homeric
abysmal
amplitudinous
astronomic
astronomical
awesome
boundless
bulky
colossal
cosmic
elephantine
enormous
epic
extensive
galactic
giant
giantlike
gigantic
heroic
huge
immeasurable
immense
infinite
jumbo
king-size
large
mammoth
massive
massy
mighty
monster
monstrous
monumental
mountainous
outsize
overgrown
prodigious
profound
sizable
spacious
stupendous
titanic
towering
tremendous
vast
voluminous