Synonyms to monumental

abysmal, 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, mountainous, plumbless, plunging, prodigious, profound, soundless, stupendous, terrible, titanic, towering, tremendous, unfathomable, unfathomed, unsounded, vast, without bottom, yawning, aerial, Olympian, aerials, aeriform, aerodynamic, aerophysical, aerospace, aerostatic, aerotechnical, aery, air-built, air-conscious, air-minded, air-wise, airish, airlike, airsick, airworthy, airy, alfresco, altitudinous, ascending, aspiring, atmospheric, aviational, breezy, chimeric, cloud-born, cloud-built, cloud-woven, directional antenna, dish, dominating, doublet, elevated, eminent, ethereal, exalted, exposed, fuming, fumy, gaseous, gasified, gasiform, gaslike, gassy, haughty, high, high-pitched, high-reaching, high-set, high-up, immaterial, impalpable, imperceptible