The prefix accipio- (pronounced ah-chee-peeoh) is Latin for: I accept, I take for myself, to recognize, to understand.
Accipiogender is a term that encompasses people who were born and grew up without the imposition of gender roles (with gender-neutral parenting), and who may or may not identify themselves with some gender(s) later on. 
The flag contains the following colors: black, symbolizing the mourning because of bad things caused by the imposition of gender; blue and pink, representing cisnormative and exorsexist/binarist imposition of gender; white, a neutral color, is layered behind the imposition of gender, and symbolizes the neutral or non-existent experience of gender. The yellow bird means freedom.
Term created in 2016 by Rexistencia Não Binária (Nonbinary RExistence, a Brazilian collective).