Synonyms of unsounded

Adjective

1. profound, unfathomed, unplumbed, unsounded, deep (vs. shallow)

usage: 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"

2. silent, unsounded, inaudible (vs. audible), unhearable

usage: not made to sound; "the silent `h' at the beginning of `honor'"; "in French certain letters are often unsounded"