Atlantean

1. (a.) Of or pertaining to the isle Atlantis, which the ancients allege was sunk, and overwhelmed by the ocean.

2. (a.) Pertaining to, or resembling, Atlas; strong.

Thesaurus Entries

Atlantean, Brobdingnagian, Cyclopean, Gargantuan, Herculean, Homeric, abyssal, appalling, astronomic, awful, bottomless, cavernous, colossal, deep as hell, dreadful, elephantine, enormous, epic, fathomless, gaping, giant, giantlike, gigantic, heroic, huge, illimitable, immense, infinite, jumbo, mammoth, mighty, monster, monstrous, monumental, mountainous, plumbless, plunging, prodigious, profound, soundless, stupendous, terrible, titanic, towering, tremendous, unfathomable, unfathomed, unsounded, vast, without bottom, yawning