- In a cavernous manner; like a cavern.
#*1933: s:Author:Robert_E._Howard|Robert Howard, s:Black Colossus|Black Colossus
#*:The lurid unearthly glow still hovered in the shadowy chamber, lighting ghostlily the dead face of Thugra Khotan, which seemed to grin mirthlessly and cavernously at them.
- In a cavernous manner; sounding deep, hollow, or echoey.
#*1899: w:Stephen Crane|Stephen Crane, s:Making an Orator|Making an Orator
#*:...the mother of the boy was alarmed beyond measure at Jimmie's curious illness, which caused him to lie on the rug in front of the fire and groan cavernously.