Cassgender

Cassgender is a gender identity describing an individual who may experience a gender identity but feels that it is unimportant. Cassgender may also describe an individual who is indifferent towards the idea of gender identity.

Cassgender is different from a lack of gender, as a cassgender individual may have a gender but not feel that it's an important part of their identity.

A related term is cassflux, where the level of indifference fluctuates. Sometimes one might feel completely indifferent towards gender, but at other times gender might feel more important.

Cassgender individuals who are male-aligned may use the term cassboy. Cassgender individuals who are female-aligned may use the term cassgirl. Cassgender individuals who are non-binary-aligned may use the term cassenby.

History
The term was coined by Tumblr user okaygender via mogai-archive on September 28, 2014.

Flag
The cassgender flag was created by pride-flags-for-us on or before February 27, 2015.

Etymology
"Cass" means "to render useless or void" in English.