imoga-pride:

Agingender: umbrella term for all genders agender/agenine in nature. Also a term to refer to a gender that isn’t fully null, or a genderlessness in which ageninity is its defining feature. May simply be used as “agin”, ie. “my gender is agin”.

You may say this is basically the agender flag, but it’s on -ingender flag format. Reminder just because a label is suffixed with -gender doesn’t mean it’s comgender. Not to be confused with aingender (apora in nature) or nulltrois.

Ageninity in this case appplies/relates to qualities or attributes regarded as characteristic of agenderness.