adeptship

From adept + -ship.

adeptship (countable and uncountable, plural adeptships)

1. The role or status of an adept.
   • 1928, Lewis Spence, Mysteries of Britain, page v. 123:

     It is, indeed, part of the ritual of the candidate for adeptship into the British mysteries, resembling that for the neophyte into the Osirian, Cabiric or Orphean mysteries.