Insomnigender is a xenogender relating to insomnia. One’s gender could feel restless or tired. It could also feel like it is resting at times irregularly.
History
The term was coined by user TheGamblingDemon on January 22, 2021. The flag was created at the same time.
Flag
The flag meaning is as follows: black is for the gender's restlessness, and navy blue fading into blue is the gender's feeling of tiredness.