Bible Dictionaries
Diabolism

Webster's Dictionary

(1):

(n.) Character, action, or principles appropriate to the devil.

(2):

(n.) Possession by the devil.

Bibliography Information
Webster, Noah. Entry for 'Diabolism'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​d/diabolism.html. 1828.