Findemonic is best described as: a gender that is feminine in nature without being a female/girl at all, but relates to it on a demonic level of the universe. Ones who identifies with this gender feel any type of connection to feminity without actually being a female/girl, but the FIN-ness having a strong connection to Hell, demons, devils, evil, and underworlds. It can be an aesthetigender, xenogender, and a fingender.
History
It was coined by FANDOM user SoraFromSmash on 17 January 2022. More specifically, by their headmate Alice.