Demonologer is a word commonly used to describe someone who studies demons. However, there are several synonyms that can be used interchangeably with this term. One alternative is demonologist, which has the same meaning. Another option is diabolist, which is a more obscure synonym that is also used to refer to someone who studies demons. Other possible synonyms include demon anologist, daemonologist, and devilogist. In general, all of these terms describe someone who is interested in understanding the nature of demons and their role in mythology, religion, and culture. Whether you use demonologer or one of its many synonyms, it is clear that this is a field of study that continues to fascinate people around the world.