unsounded
-
(s) 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
-
(s) not made to sound
- the silent "h" at the beginning of "honor"
- in French certain letters are often unsounded