Esoteric
Esoteric refers to knowledge, teachings, or practices that are intended for or understood by only a small, initiated group rather than the general public. In common usage, it can also describe material that is obscure or arcane. The term originates from the Greek esoterikos meaning “inner” or “within,” formed from esa (inside) and terō (to place), contrasting with exoterikos, meaning “outer” or public.
In religious and philosophical contexts, esoteric teachings are those believed to be accessible only to initiates
In modern scholarship, esotericism is used as a methodological category to study these traditions as historical