Unusexual is when someone experiences sexual attraction to a single gender that is different than their own, this includes attraction to the "opposite gender" (if they're a binary gender). For example, a woman being attracted to only genderfluid people. Some enbian people might choose to identify as unusexual as well if they're only attracted to one gender on the non-binary spectrum.
History
This term was coined by FANDOM user Kitty Queen123 in 2020.