adeptical
/əˈdɛptɪkl/ /aˈdɛptɪkl/rare after 17th cent
adjective
Of or relating to the work of adepts, especially alchemists.
Origin
Mid 17th century; earliest use found in John Chandler (b. c1625). Either from post-classical Latin adepticus easily obtained, or independently from classical Latin adeptus adept + -ic.