Answer: esotery

AnswerCrossword Clue
ESOTERY

Arcane stuff

ESOTERY

Obscure stuff

ESOTERY

Gnostic knowledge, e.g.

ESOTERY
Abstruse stuff
ESOTERY
The arcane and the abstruse
ESOTERYSecret doctrine.
ESOTERYAbstruse doctrines.
ESOTERYRecondite state
ESOTERYObscure things
ESOTERYObscure knowledge
ESOTERYArcane matters