1. Situated at or extending to great depth; too deep to have been sounded or plumbed
   "remote and unsounded caverns"
   - profound, unfathomed, unplumbed 
2. Not made to sound
   "in French certain letters are often unsounded"
   - silent

See also: deep, inaudible, unhearable

• medial rectus muscle
• medially
• median
• median value
• mediant
• mediastinal
• mediastinum
• mediate
• mediated
• mediateness
• mediation
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• mediatorial
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• mediatrix
• medic
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• Medicago
• Medicago arborea
• Medicago echinus
• Medicago falcata
• Medicago intertexta
• Medicago lupulina
• Medicago sativa
• Medicaid