reconditely

/rɪˈkɑndətli/
adverb
  1. In a way that is difficult to understand; obscurely or with deep, specialized knowledge.
    • The professor spoke reconditely about ancient philosophy, leaving most of the class confused.
    • She wrote reconditely, using jargon that only experts in the field could follow.
    • The instructions were phrased reconditely, so I had to read them several times.