From The Collaborative International Dictionary of English v.0.44 [gcide]:
From WordNet (r) 2.0 [wn]:
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
53 Moby Thesaurus words for "cavernous": abysmal, abyssal, boat-shaped, boatlike, bottomless, bowl-shaped, bowllike, cavelike, commodious, concave, concaved, craterlike, cup-shaped, cupped, cymbiform, deep as hell, dish-shaped, dished, dishing, dishlike, fathomless, funnel-breasted, funnel-chested, funnel-shaped, gaping, hollow, hollowed, incurved, incurving, incurvous, infundibular, infundibuliform, navicular, naviform, plumbless, plunging, retiring, retreating, reverberant, saucer-shaped, scaphoid, scyphate, sepulchral, soundless, spoonlike, sunk, sunken, unfathomable, unfathomed, unsounded, vast, without bottom, yawning
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