Entrogender

Entrogender describes a person whose gender is slowly, but constantly, wearing away. It can also be used as a prefix for other genders (eg. entrogirl).

Etymology
Entrogender is derived from the word “entropy”.

History and Flag
The term was coined by Tumblr user gyey around 2015. The flags were designed by Pride-Flags on DeviantArt on September 4, 2015. The gendered colour fades to gray to represent the “fading away” of this gender.