Bxgender Flag

Bxgender (or Gxndxr) is a fancy way of saying genderfluid/polygender defined as "a set of bigender terms where another identity is mixed with agender.
These agxndxr identities have an X replacing vowel(s), such as in gxrl/gxl/lxdy, bxy/gxy/dxde, nxnbinary/xnby, neutrxis, pxngender, andrxgynx and gxndxrqueer.¹"

History of the term

Bxgender was coined on November 30, 2019 by mod AP (aka tumblr user arco-pluris) on Beyond-MOGAI-Pride-Flags. The flag was created at the same time.²