1. Situated at or extending to great depth; too deep to have been sounded or plumbed
   "unplumbed depths of the sea"
   - profound, unfathomed, unsounded

See also: deep

• Denmark Vesey
• Dennis Gabor
• Dennstaedtia
• Dennstaedtia punctilobula
• Dennstaedtiaceae
• healthier
• healthily
• healthiness
• healthy
• heap
• heap up
• heaps
• hear
• hear hear
• hear out
• hearable
• heard
• hearer
• hearing
• hearing aid
• hearing disorder
• hearing dog
• hearing examiner
• hearing impairment
• hearing loss