| Mountainous 1. (a.) Full of, or containing, mountains; as, the mountainous country of the Swiss. 2. (a.) Inhabiting mountains. 3. (a.) Large as, or resembling, a mountain; huge; of great bulk; as, a mountainous heap. Thesaurus Entries Atlantean, Brobdingnagian, Cyclopean, Gargantuan, Herculean, Homeric, abysmal, alpen, alpestrine, alpigene, alpine, amplitudinous, astronomic, astronomical, awesome, boundless, bulky, colossal, cosmic, craggy, elephantine, enormous, epic, extensive, formidable, galactic, giant, giantlike, gigantic, heroic, high, hilly, huge, immeasurable, immense, infinite, jumbo, king-size, knobby, large, mammoth, massive, massy, mighty, monster, monstrous, monticuline, monumental, mountained, outsize, overgrown, prodigious, profound, rolling, sizable, spacious, staggering, steep, stupendous, subalpine, titanic, towering, tremendous, vast, voluminous, weighty |