unplumbed

Từ điển Oxford Learners Wordfinder Dictionary

adjective

situated at or extending to great depth;
too deep to have been sounded or plumbed (Freq. 1)
- 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, unsounded
• Similar to:
deep
• Derivationally related forms:
profoundness (for: profound), profundity (for: profound)

• Từ đồng nghĩa / Synonyms:
  profound, unfathomed, unsounded