Altegender

Altegender is a xenogender in which one's gender feels as though it’s in a parallel dimension, on a different plane, in a mirror universe, or just in an alternate existence. One may have an understanding of their gender, but it feels distant. It can be combined with other genders to form more specific genders (ie: altegirl, alteboy, altenonbinary, etc.) The name is derived from the phrase "alternate existence".

History
Altegender was coined on September 20, 2016 by Tumblr user Gaypeachs (previously Transkrem).