IPA: /ˈdiː.mə.nɪst/
KK: /ˈdɛmənɪst/
A person who believes in or worships demons.
The demonist performed rituals to honor the spirits they believed in.
Demonist → It is formed from "demon" (from Greek "daimon", meaning spirit or divine power) and "-ist" (meaning one who practices or is concerned with). A demonist is someone who is concerned with or practices the beliefs related to demons or spirits.
Think of a 'spirit' ('daimon') and someone who is 'concerned with' or practices that belief ('-ist'). This helps you remember that a demonist is someone who engages with the ideas of demons.