CAVERNOUSLY
Etymology
Adverb
cavernously (comparative more cavernously, superlative most cavernously)
In a cavernous manner; like a cavern.
In a cavernous manner; sounding deep, hollow, or echoey.
...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.
Source: Wiktionary
CAVERNOUS
Cav"ern*ous, a. Etym: [L. cavernosus: cf. F. caverneux.]
1. Full of caverns; resembling a cavern or large cavity; hollow.
2. Filled with small cavities or cells.
3. Having a sound caused by a cavity. Cavernous body, a body of
erectile tissue with large interspaces which may be distended with
blood, as in the penis or clitoris.
– Cavernous respiration, a peculiar respiratory sound andible on
auscultation, when the bronchial tubes communicate with morbid
cavities in the lungs.
Source: Webster’s Unabridged Dictionary 1913 Edition