recondite
1. [ adjective ] difficult to penetrate; incomprehensible to one of ordinary understanding or knowledge
Synonyms: deep abstruse
Examples:

"the professor's lectures were so abstruse that students tended to avoid them" "a deep metaphysical theory" "some recondite problem in historiography"

Related terms: esoteric
Similar spelling:   reconnoiter
  recondition
  resound
  rescind
  recount
  reconnoitre
  Rezendes
  Resendez
  Resendes
  rekindle
  recommit
  Recendez
  reasoned
  resonate
  resounding
  rescinding
  rejoinder
  recounting
  reignite
  reason_out