Antigender

Antigender is an umbrella term for any gender that can only be described as being the opposite of another gender (known as an eugender). For example, antiboy would be the opposite of a male. However, antiboy would not necessarily be female, because male and female are not opposites. Antigender may also be used by people who cannot narrow down their gender, but know they are definitely not a certain gender.

Flag
The antigender flag was coined by beyond-mogai-pride-flags on June 4th of 2018. It has no confirmed meaning.

History
Antigender was coined by Tumblr user adhdtobey on an unknown date.

Resources

 * https://beyond-mogai-pride-flags.tumblr.com/post/174585389260/antigender-pride-flag


 * https://www.tumbex.com/beyond-mogai-pride-flags.tumblr/posts?tag=antigender
 * https://lgbtqiarchive.tumblr.com/post/617487388342632448/antigender