Little-known and Orphic

Little-known adjective - Unknown to most people.

Orphic and little-known are semantically related in mysterious topic. In some cases you can use "Orphic" instead an adjective phrase "Little-known".

Orphic adjective - Having an import not apparent to the senses nor obvious to the intelligence; beyond ordinary understanding.

Little-known and orphic are semantically related in mysterious topic. Sometimes you can use "Little-known" instead an adjective "Orphic".