unsounded (
http://definr.com/unsounded)
adj 1: 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,
unplumbed]
2: not made to sound; "the silent `h' at the beginning of
`honor'"; "in French certain letters are often unsounded"
[syn:
silent]