Hypertext Webster Gateway: "unplumbed"
From WordNet (r) 1.7 (wn)
unplumbed
adj : 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" [syn: {profound}, {unfathomed}, {unsounded}]
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