Definitions

1. adjective

relating to, or resembling, a catacombs, especially in being underground or subterranean

“The catacumbal tunnels were a hidden gem beneath the city streets.”

2. adjective

full of, or reminiscent of, death, the dead, or the afterlife

“The catacumbal atmosphere in the old chapel was haunting and evocative.”

3. noun

a person or thing that is catacumbal in character or association

“The catacumbal figure in the painting stood out starkly against the backdrop of the city.”