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 ]
not made to sound; the silent `h at the beginning of `honor; in French certain letters are often unsounded
[ Syn: silent ]