a person who invokes a devil; cf. cleper, n.

A person who (knowingly or unknowingly) follows the Devil or serves his interests. Also: a practitioner or scholar of, or enthusiast for, rituals…

= devil dealer n.

A person who worships or believes in demons; = demonist, n.

a person who has dealings, or makes deals, with the Devil or devils; a sorcerer.

a person inspired by a demon or by the Devil.

A person who (supposedly) invokes demons with sorcery; a practitioner of demonurgy.