The definition of cavernous is vast or filled with caverns or cavities.
That yawns or yawn.
Roomy; ample; loose; full
Difficult or impossible to measure:
Find another word for abyssal. In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for abyssal, like: abysmal, cavernous, gaping, yawning, wide, unfathomable, Seabight, gangetic and intertidal-zone.