#1 unsounded s. [profound, unfathomed, unplumbed] 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". wn
#2 unsounded s. [silent] not made to sound; "the silent 'h' at the beginning of 'honor'"; "in French certain letters are often unsounded". wn
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