esoteric

confined to and understandable by only an enlightened inner circle

Map collecting is an esoteric hobby to most, but to geography geeks it is a highly enjoyable pastime.

Those of us Straussians would call it esoteric writing, which is necessary to varying degrees at all times because every regime has its own particular idols.

The only place one may find them is in esoteric and occult histories and their own works spread across at least seven generations.

Note that you can build your GRE vocabulary via Vocab Assistant app hosted in facebook messenger.