recondite

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

difficult to penetrate;
incomprehensible to one of ordinary understanding or knowledge
- the professor's lectures were so abstruse that students tended to avoid them
- a deep metaphysical theory
- some recondite problem in historiography
• Syn:
abstruse, deep
• Similar to:
esoteric
• Derivationally related forms:
reconditeness, abstrusity (for: abstruse), abstruseness (for: abstruse)

• Từ đồng nghĩa / Synonyms:
  abstruse, deep