Uingender (link) is an umbrella term for genders that are unnamed, undecided, unsure, undefined, unidentified (link), unquantifiable, unexplained, undetermined, unknown (link), unfixed, unspecified (link), unstated, unfamiliar, etc., in nature. Not to be confused with ungender or gender questioning.
Terminology and stuff that I know of so far-
Shorter forms: UIN, uin, U, ?, [a literal space]
Spectrum: uiaspec (link)
Overall gender quality: unine (link) or agnosine (link)
Specific gender qualities ending in "-ine": adelosine, aphanine, vacuine (link)
UIN adult/s: nebulan/en, uinan/en (link)
Other UIN people: plume/uvan/fog/pluve (link)
Attraction to UIN: uiaoinic (link), fliauinic (link)
Concept of UIN but as an attraction/sexuality: uinattractional/uinsexual (link)
This will be updated as time goes on and as I fumble with terminology.
