IPA: /ˌrɛkənˈdaɪtnəs/
KK: /rɪˈkɒn.daɪt.nəs/
The quality of being difficult to understand or known only to a few people; it often refers to complex or obscure knowledge.
The reconditeness of the subject made it challenging for the students to grasp the concepts.
Reconditeness → It is formed from "reconditus" (from Latin, meaning hidden or concealed) and the suffix "-ness" (meaning the state or quality of). The word "reconditeness" refers to the quality of being hidden or not easily understood.
Think of something that is 'hidden' ('reconditus') — the '-ness' indicates a state, so reconditeness means the state of being hidden or obscure.