Tenebrian is a combined gender element from the element system. It is combination of the feminine element, eluvian (water) and the xenine element, alterian (spirit), and is represented by the element of shade. One whose gender element is a combination of feminine and xenine would be tenebrian. The noun form of the word is tenebri (ex: I am tenebri).
History
Tenebrian was first known to be coined on January 14, 2018, along with the flag[1], but it was likely coined earlier than that on a Google spreadsheet[2].
Flag
The flag's colors are purple and black- representing shade- with a diamond in the center, representing two triangles together.
Etymology
The word tenebrian comes from the Latin word tenebrae, meaning "darkness" or "shadows"[3].