unplumbed

• unplumbed

unplumbed

Adjective

situated at or extending to great depth; too deep to have been sounded or plumbed; "the profound depths of the sea"; "the dark unfathomed caves of ocean"-Thomas Gray; "unplumbed depths of the sea"; "remote and unsounded caverns"

Synonyms:

• profound
• unfathomed
• unplumbed
• unsounded