esoteric /ˌɛsəˈterɪk/ adjective Learner's definition of ESOTERIC
[more esoteric; most esoteric]
1
: only taught to or understood by members of a special group秘传的;仅内传的;只有内部(或内行)人知晓的 : hard to understand难懂的 2
: limited to a small number of people限于少数人的;限于小圈子的 — esoterically
/ˌɛsəˈterɪkli/ adverb