Dreye權威釋義|esoteric

a.

祕傳的；深奧的；難理解的
Kunqu is an esoteric art form that only a handful of people can appreciate.
崑曲是一種只有少數專家才能欣賞的藝術。
限於圈內人的
隱密的

同義參見:

以上來源於：《英漢大辭典》

/ˌɛsəˈtɛrɪk, ˌiːsə-/

adj.

intended for or understood by only a small number of people with a specialized knowledge or interest.

C17: from Gk esōterikos, from esōterō, compar. of esō ‘within’, from es, eis ‘into’.

以上來源於：《簡明牛津英語詞典》