Endogender is a gender for when one's gender is fluid or fluctuating, but is always at least somewhat related to a given gender(s). For example, one could always be at least partially masculine (endoboy or marfluid), feminine (endogirl or venufluid), androgynous (endoandrogyne or eafluid), or non-binary/neutral genders (endononbinary or eafluid) whilst being fluid in some way.
History
The term was coined by a unknown user on an unknown date.
Flag
The endogender/endononbinary flag was designed by nova-pride-flags on Tumblr on or before July 20th, 2016.[1] It has no confirmed meaning.
The endoboy and endogirl flags, as well as the alternate endoboy flag, were created by an unknown user on or before July 20th, 2016. They have no confirmed meanings.
The endoandrogyne flag was designed by Kalliepride on Tumblr.[2]
The alternate endogirl flag was designed by Pride-Flags on DeviantArt on August 14, 2015. The outer pinks represents femininity. The light lavender in the middle is a mix of pink, blue, and grey to represent those who shift to a partially feminine/masculine/genderless/non-binary feeling.
Etymology
Endogender is from the Latin root “endo” meaning “within”.[3]