Titanic :  adj : of great force or power

Atlantean, Brobdingnagian, Cyclopean, Gargantuan, Herculean, Homeric, abysmal, amplitudinous, astronomic, astronomical, awesome, boundless, bulky, colossal, cosmic, cyclopean, elephantine, enormous, epic, extensive, galactic, gargantuan, 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, towering, tremendous, vast, voluminous, weighty,