List of massive synonyms and massive related words.
Brobdingnagian, Cyclopean, Gargantuan, adamantine, amplitudinous, astronomical, awesome, awkward, big, boundless, broad-bodied, bulky, bullnecked, burdensome, close, close-knit, close-textured, close-woven, clumsy, coarse, colossal, compact, compacted, compressed, concentrated, concrete, condensed, congested, consolidated, corpulent, cosmic, cracking, crammed, crammed full, crass, crowded, cumbersome, cumbrous, dense, durable, elephantine, enduring, enormous, extensive, fantastic, fat, firm, full, full-bodied, galactic, gargantuan, gigantic, gluey, grand, gross, hard, heavy, heavyset, heavyweight, hefty, huge, hulking, hulky, humongous, immeasurable, immense, impenetrable, impermeable, incumbent, infinite, jam-packed, jammed, jumbo, king-size, large, lasting, leaden, lubberly, lumbering, lumpish, lumpy, mammoth, massy, mighty, monster, monstrous, monumental, mortal, mountainous, nonporous, onerous, oppressive, outsize, overgrown, oversized, overweight, packed, ponderous, prodigious, rugged, serried, sizable, solid, sound, spacious, stable, steady, stout, strong, stupendous, sturdy, substantial, superincumbent, thick, thick-bodied, thick-growing, thickset, three-dimensional, titanic, tough, towering, tremendous, unwieldy, unyielding, vast, viscid, viscose, viscous, voluminous, walloping, weighty, well-built, well-constructed, well-founded, well-grounded, well-made, whopping