Antimultigender is an umbrella term for any multigender identity containing one or more antigender.
History
It is currently unknown when this term was coined or who coined it. The earliest usage of antimultigender was June 27, 2018.[1]
Flag
The antimultigender flag was designed by Wikia FANDOM user Calamity Call on December 29, 2020.[2][3] The color meanings are currently unknown.