Enormous is most commonly used word to describe big before someone uses colossal.
yes
Large enormous colossal gigantic gargantuan
colossal, humongous, ginormous, giant, enormous, etc.
enormous
~colossal crab ~Deceptive crab ~drunken crab ~etc.
* astronomic * astronomical * galactic * ample * sizable * sizeable * colossal * prodigious * stupendous * enormous * tremendous * elephantine * gargantuan * giant * jumbo * gigantic * mammoth * huge * immense * vast * massive * monstrous * voluminous
Large, ample, colossal, gigantic, mammoth, huge, immense, humongous, massive,
· evil · eerie · enormous
Tall, enormous, gigantic, tremendous,
Strong, quick, mighty, gargantuan, enormous
· elegant · enormous · erect · exquisite
hot and old and ancient