(a.) of bulky volumes.

Gargantuan adamantine amplitudinous astronomical awesome awkward boundless broad-bodied bullnecked chunky clumsy coarse colossal contrary corpulent cosmic crass crosswise cumbersome cumbrous dense durable elephantine enduring enormous extensive fat firm full full-bodied galactic gigantic gross hard heavy heavyset huge hulking hulky immeasurable immense impractical inconvenient infinite king-size large lasting lubberly lumbering lumpish lumpy mammoth massive massy monster monstrous monumental mountainous outsize overgrown perverse ponderous prodigious rugged sizable solid sound spacious stable steady stout strong stupendous sturdy thick thick-bodied thickset three-dimensional titanic tough tremendous ungainly unhandy unmanageable unwieldy unyielding vast viscous voluminous weighty well-built well-constructed well-founded well-grounded well-made