езотеричен означава в английски

arcane▼(understood by only a few; obscure)
adjective
[UK: ɑːˈk.eɪn] [US: ˌɑːrˈk.eɪn]

esoteric▼(understood only by a chosen few)
adjective
[UK: ˌe.səʊ.ˈte.rɪk] [US: ˌeso.ʊ.ˈte.rɪk]

rarefied▼(distant from the lives and concerns of ordinary people)
adjective
[UK: ˈreə.rɪ.faɪd] [US: ˈre.rə.faɪd]