Synthagender is a xenogender for people who align with femininity in the way that it is modeled by androids and robots. It embraces a sort of “synthetic femininity”; aka, the feeling that you have carefully curated your fem-leaning presentation yet it is somehow artificial and/or not inherently linked to the way you experience gender (similar to how androids might process/understand it).
The masculine counterpart is Synthogender.
History
The term was created by @scribblue, they also created the flag
Flag
The pinkish-gray stripe represents a connection to androids/robots, the mauve stripe represents an unconventional attachment to femininity, and the white stripe represents the non-binary/trans umbrella.
The binary code, when translated, reads "synthagender".