cavernous[adjective]Synonyms: deep, hollow, sunken, yawning
Related Words: commodious,
vast [TahlilGaran] English Synonym Dictionary ▲
cav‧ern‧ous /ˈkævənəs $ -ərnəs/
adjective literary a cavernous room, space, or hole is very large and deep:
a cavernous dining hall [TahlilGaran] Dictionary of Contemporary English ▲